CVE-2023-48795

CRITICALNVD 5.99.0
EchelonGraph scoreHIGH confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score elevated to 9.0 because EPSS predicted 94% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs) when EchelonGraph scored this CVE. NVD baseline CVSS 5.9 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Weaponized

Also known asEUVD-2023-3093 (ENISA EUVD) · GHSA-45x7-px36-x8w8 (GitHub Security Advisories) · GO-2023-2402 (OSV.dev) · PYSEC-2026-1758 (OSV.dev)Source: ENISA EUVD

9.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • 3,372 internet-facing services (distinct ip:port) on record running an affected version — derived from Shodan data (© Shodan); a patched service can stay counted while its port stays open
  • High exploitation likelihood — EPSS 94%
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 94%CVSS: 5.9Exploit: Public PoCExposed services: 3,372

A fix is available — apply it.

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in [email protected] and (if CBC is used) the [email protected] MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.

Internet exposure · derived from Shodan data

3,372 internet-facing services (distinct ip:port) on record running a version that maps to CVE-2023-48795, in our KEV-Exposure radar’s Shodan-derived sample.

across 74 hosting countries (China, United States, Germany, France, Netherlands)top: openssh
See the KEV-Exposure radar →Derived from Shodan data. Shodan data is owned by Shodan, which holds its copyright (© Shodan). EchelonGraph claims no ownership of it or copyright in it. Aggregate, host-redacted.

How it counts: every 12 hours, when Shodan query credits allow, the radar runs one Shodan query per tracked product, reads up to 100 ip:port services per query, and keeps a service when its banner version matches a CISA-KEV or high-EPSS CVE; a service is dropped when neither a search nor a Shodan InternetDB port re-check has refreshed it for 21 days. A re-check that finds the port still listed by Shodan InternetDB refreshes the service without re-reading the banner, so a patched service can stay counted while its port stays open. A count is a banner-version inference over a sample, not an exploit test and not an internet-wide census, and the unit is a service, not a machine: a machine answering on two ports counts twice.

CVSS v3
5.9
EG Score
9.0CRITICALhigh confidence
EG Risk
64
EG Risk 64/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity59% × 45%
Impact severity (EG Severity): CVSS 5.9 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation94% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
94%
EPSS %ILE
99th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is EPSS's lift toward 9.0 from its impact severity (EG Severity, CVSS 5.9 MEDIUM): a likelihood of exploitation, not impact.

EG Severity
5.9 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
94% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

December 18, 2023

Last Modified

October 15, 2026

Advisory Details (10)

Auto-updated Jul 14, 2026
Patch available.
Web page

Tags · ronf/asyncssh · GitHub

https://github.com/ronf/asyncssh/tags
Web page

Bitvise SSH Server Version History | Bitvise

https://www.bitvise.com/ssh-server-version-history
Web page

Commits · openssh/openssh-portable · GitHub

https://github.com/openssh/openssh-portable/commits/master
Web page

OpenSSH: for OpenBSD

https://www.openssh.com/openbsd.html
Web page

Changelog — Paramiko documentation

https://www.paramiko.org/changelog.html
Web page

Xshell Update History – NetSarang Website

https://www.netsarang.com/en/xshell-update-history/
Web page

proftpd/RELEASE_NOTES at master · proftpd/proftpd · GitHub

https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES
Web pageMentions a patch (unverified)
https://matt.ucc.asn.au/dropbear/CHANGES

Patch Availability(34)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhceph/rhceph-8-rhel9:17911769902026-10-08redhat
redhatceph-2:19.2.1-423.el9cp2026-10-08redhat
redhatoath-toolkit-0:2.6.12-1.el8cp2025-05-07redhat
redhatopenshift4/ose-installer:v4.14.0-202410120808.p0.gb6457e9.assembly.stream.el82024-10-23redhat
redhatopenshift4/ose-docker-builder-rhel9:v4.17.0-202409122005.p1.gcfcf3bd.assembly.stream.el92024-10-01redhat
redhatopenshift4/ose-tools-rhel8:v4.14.0-202408260910.p0.g44b3ac2.assembly.stream.el82024-09-11redhat
redhatopenshift4/egress-router-cni-rhel8:v4.14.0-202408070332.p0.g96f2f54.assembly.stream.el82024-08-22redhat
redhatopenshift4/ose-ptp-rhel9:v4.15.0-202408130908.p0.gcb7ef64.assembly.stream.el92024-08-21redhat
redhatopenshift4/ose-ptp-rhel9:v4.14.0-202408090010.p0.g3f4aba2.assembly.stream.el92024-08-21redhat
redhatopenshift4/ose-olm-rukpak-rhel8:v4.12.0-202408072016.p0.gf219ce7.assembly.stream.el82024-08-19redhat
redhatopenshift4/ose-aws-efs-csi-driver-container-rhel8:v4.14.0-202407120139.p0.g18d04fd.assembly.stream.el82024-08-07redhat
redhatopenshift4/egress-router-cni-rhel8:v4.15.0-202407302337.p0.gf8ec690.assembly.stream.el82024-08-07redhat
redhatopenshift4/ose-aws-ebs-csi-driver-rhel8:v4.14.0-202407120139.p0.g4622dee.assembly.stream.el82024-08-07redhat
redhatopenshift4/egress-router-cni-rhel9:v4.16.0-202407180206.p0.g7089efe.assembly.stream.el92024-07-24redhat
redhatcontainer-native-virtualization/cluster-network-addons-operator-rhel9:v4.15.3-72024-07-18redhat
redhatopenshift4/ose-azure-disk-csi-driver-rhel8:v4.14.0-202407090841.p0.g6d3558a.assembly.stream.el82024-07-17redhat
redhatopenshift4/ose-olm-rukpak-rhel8:v4.13.0-202407081338.p0.gaf47118.assembly.stream.el82024-07-17redhat
redhatjenkins-2-plugins-0:4.15.1718879538-1.el82024-07-17redhat
redhatopenshift4/ose-vsphere-cluster-api-controllers-rhel8:v4.14.0-202407021509.p0.gb5346ad.assembly.stream.el82024-07-11redhat
redhatopenshift4/ose-installer-artifacts:v4.15.0-202406251908.p0.g132530d.assembly.stream.el82024-07-02redhat
redhatopenshift4/ose-vsphere-csi-driver-syncer-rhel9:v4.16.0-202406131906.p0.g3cd689f.assembly.stream.el92024-06-27redhat
redhatopenshift4/ose-ptp-rhel9:v4.16.0-202406131906.p0.g4447317.assembly.stream.el92024-06-27redhat
redhatopenshift4/ose-olm-rukpak-rhel8:v4.14.0-202406180839.p0.gc9409c6.assembly.stream.el82024-06-26redhat
redhatpodman-3:4.4.1-14.4.rhaos4.14.el82024-06-19redhat
redhatjenkins-2-plugins-0:4.12.1716445211-1.el82024-06-05redhat
redhatjenkins-2-plugins-0:4.13.1716445207-1.el82024-06-05redhat
redhatjenkins-2-plugins-0:4.14.1716388016-1.el82024-06-05redhat
redhatrhosp-rhel8/osp-director-operator-bundle:1.3.0-262024-05-29redhat
redhatrhosp-rhel9/osp-director-operator-bundle:1.3.1-272024-05-29redhat
redhatpython-paramiko-0:2.11.0-2.el8ost2024-05-22redhat
gogolang.org/x/crypto @ 0.17.0 (fixes >= 0.1.0, < 0.17.0)—ghsa
gogolang.org/x/crypto @ 0.0.0-20231218163308-9d2ee975ef9f (fixes < 0.0.0-20231218163308-9d2ee975ef9f)—ghsa
pipparamiko @ 3.4.0 (fixes >= 2.5.0, < 3.4.0)—ghsa
rustrussh @ 0.40.2 (fixes < 0.40.2)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(50 across 13 ecosystems)
Alpine:v3.21(7)
PackageVulnerable rangeFix by version rangeDependents
buildah—
  • every version up to 1.34.0-r1: fixed in 1.34.0-r1
—
doctl—
  • every version up to 1.102.0-r0: fixed in 1.102.0-r0
—
dropbear—
  • every version up to 2022.83-r4: fixed in 2022.83-r4
—
erlang—
  • every version up to 26.2.1-r0: fixed in 26.2.1-r0
—
filezilla—
  • every version up to 3.66.4-r0: fixed in 3.66.4-r0
—
forgejo—
  • every version up to 1.21.3.0-r0: fixed in 1.21.3.0-r0
—
gitea—
  • every version up to 1.21.3-r0: fixed in 1.21.3-r0
—
Alpine:v3.19(6)
PackageVulnerable rangeFix by version rangeDependents
buildah—
  • every version up to 1.33.2-r1: fixed in 1.33.2-r1
—
doctl—
  • every version up to 1.102.0-r0: fixed in 1.102.0-r0
—
dropbear—
  • every version up to 2022.83-r4: fixed in 2022.83-r4
—
erlang—
  • every version up to 26.2.1-r0: fixed in 26.2.1-r0
—
filezilla—
  • every version up to 3.66.4-r0: fixed in 3.66.4-r0
—
gitea—
  • every version up to 1.21.3-r0: fixed in 1.21.3-r0
—
Alpine:v3.20(6)
PackageVulnerable rangeFix by version rangeDependents
buildah—
  • every version up to 1.34.0-r1: fixed in 1.34.0-r1
—
doctl—
  • every version up to 1.102.0-r0: fixed in 1.102.0-r0
—
dropbear—
  • every version up to 2022.83-r4: fixed in 2022.83-r4
—
erlang—
  • every version up to 26.2.1-r0: fixed in 26.2.1-r0
—
filezilla—
  • every version up to 3.66.4-r0: fixed in 3.66.4-r0
—
gitea—
  • every version up to 1.21.3-r0: fixed in 1.21.3-r0
—
Alpine:v3.22(6)
PackageVulnerable rangeFix by version rangeDependents
buildah—
  • every version up to 1.34.0-r1: fixed in 1.34.0-r1
—
doctl—
  • every version up to 1.102.0-r0: fixed in 1.102.0-r0
—
dropbear—
  • every version up to 2022.83-r4: fixed in 2022.83-r4
—
erlang26—
  • every version up to 26.2.1-r0: fixed in 26.2.1-r0
—
filezilla—
  • every version up to 3.66.4-r0: fixed in 3.66.4-r0
—
forgejo—
  • every version up to 1.21.3.0-r0: fixed in 1.21.3.0-r0
—
Alpine:v3.23(5)
PackageVulnerable rangeFix by version rangeDependents
buildah—
  • every version up to 1.34.0-r1: fixed in 1.34.0-r1
—
doctl—
  • every version up to 1.102.0-r0: fixed in 1.102.0-r0
—
dropbear—
  • every version up to 2022.83-r4: fixed in 2022.83-r4
—
filezilla—
  • every version up to 3.66.4-r0: fixed in 3.66.4-r0
—
forgejo—
  • every version up to 1.21.3.0-r0: fixed in 1.21.3.0-r0
—
Alpine:v3.24(5)
PackageVulnerable rangeFix by version rangeDependents
buildah—
  • every version up to 1.34.0-r1: fixed in 1.34.0-r1
—
doctl—
  • every version up to 1.102.0-r0: fixed in 1.102.0-r0
—
dropbear—
  • every version up to 2022.83-r4: fixed in 2022.83-r4
—
filezilla—
  • every version up to 3.66.4-r0: fixed in 3.66.4-r0
—
forgejo—
  • every version up to 1.21.3.0-r0: fixed in 1.21.3.0-r0
—
Debian:11(3)
PackageVulnerable rangeFix by version rangeDependents
dropbear2020.81-3
  • every version up to 2020.81-3+deb11u1: fixed in 2020.81-3+deb11u1
—
erlang1:23.2.6+dfsg-1, 1:23.2.6+dfsg-1+deb11u1
  • every version up to 1:23.2.6+dfsg-1+deb11u2: fixed in 1:23.2.6+dfsg-1+deb11u2
—
filezilla3.52.2-3
  • every version up to 3.52.2-3+deb11u1: fixed in 3.52.2-3+deb11u1
—
Debian:12(3)
PackageVulnerable rangeFix by version rangeDependents
dropbear2022.83-1, 2022.83-1+deb12u1~bpo11+1
  • every version up to 2022.83-1+deb12u1: fixed in 2022.83-1+deb12u1
—
erlang1:25.2.3+dfsg-1
  • every version up to 1:25.2.3+dfsg-1+deb12u1: fixed in 1:25.2.3+dfsg-1+deb12u1
—
filezilla3.63.0-1, 3.63.0-1+deb12u1, 3.63.0-1+deb12u2
  • every version up to 3.63.0-1+deb12u3: fixed in 3.63.0-1+deb12u3
—
Debian:13(3)
PackageVulnerable rangeFix by version rangeDependents
dropbear—
  • every version up to 2022.83-4: fixed in 2022.83-4
—
erlang—
  • every version up to 1:25.3.2.8+dfsg-1: fixed in 1:25.3.2.8+dfsg-1
—
filezilla—
  • every version up to 3.66.4-1: fixed in 3.66.4-1
—
Debian:14(3)
PackageVulnerable rangeFix by version rangeDependents
dropbear—
  • every version up to 2022.83-4: fixed in 2022.83-4
—
erlang—
  • every version up to 1:25.3.2.8+dfsg-1: fixed in 1:25.3.2.8+dfsg-1
—
filezilla—
  • every version up to 3.66.4-1: fixed in 3.66.4-1
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
dropbear—
  • every version up to 2022.82-r2: fixed in 2022.82-r2
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
dropbear—
  • every version up to 2022.83-r1: fixed in 2022.83-r1
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
dropbear—
  • every version up to 2022.83-r2: fixed in 2022.83-r2
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 16× in last 7d / 57× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 208 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 108 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 22:19 UTCEchelonGraph re-scored
  2. 2026-11-12 22:19 UTCVendor advisory
  3. 2026-11-12 22:19 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  4. 2026-11-11 22:31 UTCEchelonGraph re-scored
  5. 2026-11-11 22:31 UTCVendor advisory
  6. 2026-11-11 22:31 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  7. 2026-11-11 16:34 UTCEPSS rescoreEPSS 94% · 99th percentile
  8. 2026-11-10 23:11 UTCEchelonGraph re-scored
  9. 2026-11-10 23:11 UTCVendor advisory
  10. 2026-11-10 23:11 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  11. 2026-11-09 23:57 UTCEchelonGraph re-scored
  12. 2026-11-09 23:57 UTCVendor advisory
  13. 2026-11-09 23:57 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  14. 2026-11-09 00:44 UTCEchelonGraph re-scored
  15. 2026-11-09 00:44 UTCVendor advisory
  16. 2026-11-09 00:44 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  17. 2026-11-08 01:31 UTCEchelonGraph re-scored
  18. 2026-11-08 01:31 UTCVendor advisory
  19. 2026-11-08 01:31 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  20. 2026-11-07 02:18 UTCEchelonGraph re-scored
  21. 2026-11-07 02:18 UTCVendor advisory
  22. 2026-11-07 02:18 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  23. 2026-11-06 16:31 UTCEPSS rescoreEPSS 94% · 99th percentile
  24. 2026-11-06 03:06 UTCEchelonGraph re-scored
  25. 2026-11-06 03:06 UTCVendor advisory
Show 75 more
  1. 2026-11-06 03:06 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  2. 2026-11-05 03:54 UTCEchelonGraph re-scored
  3. 2026-11-05 03:54 UTCVendor advisory
  4. 2026-11-05 03:54 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  5. 2026-11-04 17:55 UTCOSV refresh
  6. 2026-11-04 16:31 UTCEPSS rescoreEPSS 94% · 99th percentile
  7. 2026-11-04 04:41 UTCEchelonGraph re-scored
  8. 2026-11-04 04:41 UTCVendor advisory
  9. 2026-11-04 04:41 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  10. 2026-11-03 05:28 UTCEchelonGraph re-scored
  11. 2026-11-03 05:28 UTCVendor advisory
  12. 2026-11-03 05:28 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  13. 2026-11-02 06:14 UTCEchelonGraph re-scored
  14. 2026-11-02 06:14 UTCVendor advisory
  15. 2026-11-02 06:14 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  16. 2026-11-01 08:18 UTCGHSA enrichmentGHSA-45x7-px36-x8w8 · GitHub severity MODERATE · GitHub CVSS 5.9
  17. 2026-11-01 08:18 UTCEchelonGraph re-scored
  18. 2026-11-01 07:02 UTCEchelonGraph re-scored
  19. 2026-11-01 07:02 UTCVendor advisory
  20. 2026-10-31 07:49 UTCEchelonGraph re-scored
  21. 2026-10-31 07:49 UTCVendor advisory
  22. 2026-10-30 08:36 UTCEchelonGraph re-scored
  23. 2026-10-30 08:36 UTCVendor advisory
  24. 2026-10-29 09:23 UTCEchelonGraph re-scored
  25. 2026-10-29 09:23 UTCVendor advisory
  26. 2026-10-28 16:29 UTCEPSS rescoreEPSS 94% · 99th percentile
  27. 2026-10-28 10:11 UTCEchelonGraph re-scored
  28. 2026-10-28 10:11 UTCVendor advisory
  29. 2026-10-27 10:01 UTCEchelonGraph re-scored
  30. 2026-10-27 10:01 UTCVendor advisory
  31. 2026-10-26 10:49 UTCVendor advisory
  32. 2026-10-25 17:31 UTCEchelonGraph re-scored
  33. 2026-10-25 16:30 UTCEPSS rescoreEPSS 94% · 99th percentile
  34. 2026-10-25 11:36 UTCEchelonGraph re-scored
  35. 2026-10-25 11:36 UTCVendor advisory
  36. 2026-10-24 12:20 UTCEchelonGraph re-scored
  37. 2026-10-24 12:20 UTCVendor advisory
  38. 2026-10-23 13:07 UTCEchelonGraph re-scored
  39. 2026-10-23 13:07 UTCVendor advisory
  40. 2026-10-22 16:31 UTCEPSS rescoreEPSS 94% · 99th percentile
  41. 2026-10-22 13:53 UTCEchelonGraph re-scored
  42. 2026-10-22 13:53 UTCVendor advisory
  43. 2026-10-21 14:40 UTCEchelonGraph re-scored
  44. 2026-10-21 14:40 UTCVendor advisory
  45. 2026-10-20 15:21 UTCEchelonGraph re-scored
  46. 2026-10-20 15:21 UTCVendor advisory
  47. 2026-10-19 16:29 UTCEPSS rescoreEPSS 94% · 99th percentile
  48. 2026-10-19 15:59 UTCVendor advisory
  49. 2026-10-18 16:44 UTCEchelonGraph re-scored
  50. 2026-10-18 16:44 UTCVendor advisory
  51. 2026-10-18 16:29 UTCEPSS rescoreEPSS 94% · 99th percentile
  52. 2026-10-18 07:45 UTCEchelonGraph re-scored
  53. 2026-10-18 02:43 UTCEchelonGraph re-scored
  54. 2026-10-18 02:43 UTCVendor advisory
  55. 2026-10-17 16:30 UTCEPSS rescoreEPSS 94% · 99th percentile
  56. 2026-10-17 03:28 UTCEchelonGraph re-scored
  57. 2026-10-17 03:28 UTCVendor advisory
  58. 2026-10-16 04:13 UTCEchelonGraph re-scored
  59. 2026-10-16 04:13 UTCVendor advisory
  60. 2026-10-15 01:27 UTCEchelonGraph re-scored
  61. 2026-10-15 01:27 UTCVendor advisory
  62. 2026-10-15 00:20 UTCEchelonGraph re-scored
  63. 2026-10-15 00:20 UTCVendor advisory
  64. 2026-10-14 16:30 UTCEPSS rescoreEPSS 94% · 99th percentile
  65. 2026-10-14 08:46 UTCEchelonGraph re-scored
  66. 2026-10-14 08:46 UTCVendor advisory
  67. 2026-10-13 04:18 UTCVendor advisory
  68. 2026-10-12 18:15 UTCEchelonGraph re-scored
  69. 2026-10-12 05:05 UTCEchelonGraph re-scored
  70. 2026-10-12 05:05 UTCVendor advisory
  71. 2026-10-11 19:11 UTCEchelonGraph re-scored
  72. 2026-10-11 19:11 UTCVendor advisory
  73. 2026-10-04 23:20 UTCEPSS rescoreEPSS 94% · 99th percentile
  74. 2026-10-01 19:48 UTCEPSS rescoreEPSS 94% · 99th percentile
  75. 2026-09-30 19:14 UTCOSV refresh

Publicly available exploits

(4 references)

Public exploit code is referenced for this CVE (1 GitHub PoC), as are 1 Nuclei detection template, 2 GitHub checker repositories. A detection template checks whether a system is affected; it is not necessarily exploit code. A GitHub repository named or described as a checker or scanner checks whether a system is affected; it is not necessarily exploit code. Defenders should treat patch urgency accordingly.

  • GitHub checkeroseasfr/Scanner_CVE_OpenSSH
    Published May 21, 2026

    Scanner para identificação de servidores com softwares SSH possivelmente vulnerável às CVEs CVE-2024-6387 e CVE-2023-48795.

    Open source ↗
  • GitHub checkerTrixSec/CVE-2023-48795
    Published Jan 8, 2025

    A Python-based tool to check for vulnerabilities in OpenSSH installations on local or remote systems by scanning specific IPs. It checks if the OpenSSH version is affected by CVE-2023-48795

    Open source ↗
  • GitHub PoCkabiri-labs/sshfinder
    Published Dec 5, 2024

    Fast, parallel SSH discovery and security auditing across hosts and CIDR ranges: identifies SSH on any port in real time, then flags auth methods, weak crypto, Terrapin (CVE-2023-48795), and reused host keys.

    Open source ↗
  • Nucleijavascript/cves/2023/CVE-2023-48795.yaml
    Published Apr 16, 2024

    OpenSSH Terrapin Attack - Detection

    Open source ↗

Frequently asked(5)

What is CVE-2023-48795?
CVE-2023-48795 is a critical-severity vulnerability; its CVE record was published on December 18, 2023. The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a…
When was the CVE record for CVE-2023-48795 published?
The CVE record for CVE-2023-48795 was published on December 18, 2023. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 15, 2026; the record at its source may have been updated since.
Is CVE-2023-48795 actively exploited?
CVE-2023-48795 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: CISA's SSVC data says a public PoC exists and its EPSS is 50% or more. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 94% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-48795?
CVE-2023-48795 has a CVSS v3 base score of 5.9 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
How do I remediate CVE-2023-48795?
A fix for CVE-2023-48795 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-48795 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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