CVE-2026-76445

MEDIUMPre-NVD 5.35.3
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 5.3 from GitHub Security Advisory (severity: MODERATE) published 2026-10-21. The CNA's CVSS baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory

Also known asEUVD-2026-107385 (ENISA EUVD) · GHSA-5cgp-9338-jh6r (GitHub Security Advisories)Source: ENISA EUVD

5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition. The vulnerability is due to a flaw in logic handling when General Packet Radio Service (GPRS) Tunneling Protocol (GTP) extension headers are processed within the codec. An attacker could exploit this vulnerability by sending a crafted, fragmented UDP datagram that contains these headers to the Snort 3 Detection Engine of an affected device. A successful exploit could allow the attacker to cause the detection engine to enter an infinite loop, resulting in a DoS condition.

CVSS v3
5.3
EG Score
5.3MEDIUMhigh confidence
EG Risk
39
EG Risk 39/100

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)
Severity53% × 45%
Impact severity (EG Severity): CVSS 5.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
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 (5.3): severity, escalated by confirmed exploitation. This CVE's 5.3 is its impact severity (EG Severity), not escalated.

EG Severity
5.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

October 21, 2026

Last Modified

October 22, 2026

Advisory Details (1)

Auto-updated Oct 22, 2026
Patch available.

Vendor Advisories for CVE-2026-76445(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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.

  1. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  3. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  5. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  6. 2026-11-07 19:20 UTCGHSA enrichmentGHSA-5cgp-9338-jh6r · GitHub severity MODERATE · GitHub CVSS 5.3
  7. 2026-11-07 19:20 UTCEchelonGraph re-scored
  8. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  9. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  10. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  12. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  13. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  14. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  16. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  17. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  18. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  20. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  21. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  22. 2026-10-25 14:02 UTCEchelonGraph re-scored
  23. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-10-22 19:18 UTCEchelonGraph re-scored
Show 11 more
  1. 2026-10-22 19:18 UTCGHSA enrichmentGHSA-5cgp-9338-jh6r · GitHub CVSS 5.3
  2. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-10-22 14:29 UTCEchelonGraph re-scored
  4. 2026-10-22 14:29 UTCGHSA enrichmentGHSA-5cgp-9338-jh6r · GitHub CVSS 5.3
  5. 2026-10-22 13:51 UTCEchelonGraph re-scored
  6. 2026-10-22 13:51 UTCGHSA enrichmentGHSA-5cgp-9338-jh6r · GitHub CVSS 5.3
  7. 2026-10-21 19:28 UTCEchelonGraph re-scored
  8. 2026-10-21 19:28 UTCGHSA enrichmentGHSA-5cgp-9338-jh6r · GitHub CVSS 5.3
  9. 2026-10-21 17:27 UTCEchelonGraph re-scored
  10. 2026-10-21 16:28 UTCEchelonGraph re-scoredFirst assessed: 5.3 MEDIUM
  11. 2026-10-21 16:25 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-76445?
CVE-2026-76445 is a medium-severity vulnerability; its CVE record was published on October 21, 2026. Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the detection engine to unexpectedly restart, resulting in a denial of service (DoS) condition. The vulnerability is due to a flaw in logic handling…
When was the CVE record for CVE-2026-76445 published?
The CVE record for CVE-2026-76445 was published on October 21, 2026. 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 22, 2026; the record at its source may have been updated since.
Is CVE-2026-76445 actively exploited?
CVE-2026-76445 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76445?
CVE-2026-76445 has a CVSS base score of 5.3 (the CNA's own assessment, by cisco; NVD's own analysis pending).
How do I remediate CVE-2026-76445?
A fix for CVE-2026-76445 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-76445 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-76445

Explore →

Is Your Infrastructure Affected by CVE-2026-76445?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.