CVE-2026-53790

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (50th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-58098 (ENISA EUVD)Source: ENISA EUVD

8.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.6% × 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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.6%
EPSS %ILE
50th
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 (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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: 14 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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; 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 total (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

August 13, 2026

Last Modified

November 6, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
Patch available. Sources: github, github_release.
Web page

rsync < 3.5.0 Command Injection via Multiple Code Paths | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths
GitHub release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
GitHub advisoryMentions a patch (unverified)

rsync: command / argument injection via unquoted peer- or host-controlled values · Advisory · RsyncProject/rsync · GitHub

Affected: 3.5.0. (Precise introduced-in ranges being finalised.)

https://github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq

Vendor Advisories for CVE-2026-53790(6)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatcostmanagement/costmanagement-ui-rhel10:17914608512026-10-08redhat
redhatrsync-0:3.1.3-28.el8_102026-09-30redhat
redhatopenshift/ose-rhel-coreos-9:4.22.9.8.202609221802-02026-09-29redhat
redhatrsync-0:3.2.7-1.el9_82026-09-14redhat
redhatrsync-0:3.5.0-3.el10_22026-09-14redhat

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

(7 across 7 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.2.7-1 ... 3.4.4+ds1-1 (28 versions)
  • every version up to 3.5.0+ds1-0+deb12u1: fixed in 3.5.0+ds1-0+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (13 versions)
  • every version up to 3.5.0+ds1-0+deb13u1: fixed in 3.5.0+ds1-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (9 versions)
  • every version up to 3.5.0+ds1-1: fixed in 3.5.0+ds1-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 36× 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 184 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 84 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:53 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  2. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  3. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  4. 2026-11-11 03:54 UTCEchelonGraph re-scored
  5. 2026-11-11 03:54 UTCVendor advisory
  6. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  7. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  8. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  10. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  11. 2026-11-06 16:12 UTCEchelonGraph re-scored
  12. 2026-11-06 16:12 UTCVendor advisory
  13. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  14. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  15. 2026-11-04 05:57 UTCEchelonGraph re-scored
  16. 2026-11-04 05:57 UTCVendor advisory
  17. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  18. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  19. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  20. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  21. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  22. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  23. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  24. 2026-10-27 21:02 UTCEchelonGraph re-scored
  25. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
Show 75 more
  1. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  2. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  3. 2026-10-25 14:20 UTCEchelonGraph re-scored
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  5. 2026-10-24 16:27 UTCVendor advisory
  6. 2026-10-23 18:26 UTCEchelonGraph re-scored
  7. 2026-10-23 18:26 UTCVendor advisory
  8. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  9. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  10. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  11. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  12. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  13. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  14. 2026-10-18 03:31 UTCEchelonGraph re-scored
  15. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  16. 2026-10-17 08:17 UTCEchelonGraph re-scored
  17. 2026-10-17 08:17 UTCVendor advisory
  18. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  19. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  20. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  22. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  23. 2026-10-12 15:57 UTCEchelonGraph re-scored
  24. 2026-10-11 19:40 UTCEchelonGraph re-scored
  25. 2026-10-11 16:55 UTCEchelonGraph re-scored
  26. 2026-10-11 14:18 UTCEchelonGraph re-scored
  27. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  28. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  29. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  30. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  31. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  32. 2026-10-07 02:32 UTCEchelonGraph re-scored
  33. 2026-10-07 02:32 UTCVendor advisory
  34. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  35. 2026-10-06 13:25 UTCEchelonGraph re-scored
  36. 2026-10-06 13:25 UTCVendor advisory
  37. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  38. 2026-10-05 14:38 UTCEchelonGraph re-scored
  39. 2026-10-05 14:38 UTCVendor advisory
  40. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  41. 2026-10-04 22:21 UTCVendor advisory
  42. 2026-10-04 08:56 UTCVendor advisory
  43. 2026-10-03 19:49 UTCEchelonGraph re-scored
  44. 2026-10-03 19:49 UTCVendor advisory
  45. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  46. 2026-10-02 21:52 UTCEchelonGraph re-scored
  47. 2026-10-02 21:52 UTCVendor advisory
  48. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  49. 2026-10-02 07:34 UTCEchelonGraph re-scored
  50. 2026-10-02 07:34 UTCVendor advisory
  51. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  52. 2026-10-01 10:53 UTCVendor advisory
  53. 2026-09-30 21:47 UTCEchelonGraph re-scored
  54. 2026-09-30 21:47 UTCVendor advisory
  55. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  56. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  57. 2026-09-29 04:05 UTCEchelonGraph re-scored
  58. 2026-09-29 04:05 UTCVendor advisory
  59. 2026-09-28 13:54 UTCEchelonGraph re-scored
  60. 2026-09-28 13:54 UTCVendor advisory
  61. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  62. 2026-09-28 00:48 UTCEchelonGraph re-scored
  63. 2026-09-28 00:48 UTCVendor advisory
  64. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  65. 2026-09-27 09:45 UTCEchelonGraph re-scored
  66. 2026-09-27 09:45 UTCVendor advisory
  67. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  68. 2026-09-25 03:34 UTCEchelonGraph re-scored
  69. 2026-09-25 03:34 UTCVendor advisory
  70. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  71. 2026-09-24 09:56 UTCVendor advisory
  72. 2026-09-23 20:50 UTCEchelonGraph re-scored
  73. 2026-09-23 20:50 UTCVendor advisory
  74. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  75. 2026-09-23 04:39 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53790?
CVE-2026-53790 is a high-severity vulnerability; its CVE record was published on August 13, 2026. rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and…
When was CVE-2026-53790 made public?
CVE-2026-53790 was made public on August 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 13, 2026. EchelonGraph's copy of the record carries a last-modified date of November 6, 2026; the record at its source may have been updated since.
Is CVE-2026-53790 actively exploited?
CVE-2026-53790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53790?
CVE-2026-53790 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53790?
A fix for CVE-2026-53790 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53790 are linked in the Vendor Advisories panel on this page.

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