CVE-2026-3497

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory published 2026-03-12. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.3%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program without setting the related connection variables. As the variables are not initialized to NULL the code later accesses those uninitialized variables, accessing random memory, which could lead to undefined behavior. The recommended workaround is to use ssh_packet_disconnect() instead, which does terminate the process. The impact of the vulnerability depends heavily on the compiler flag hardening configuration.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation2% × 40%
Automatability100% × 15%
EPSS PROB
1.3%
EPSS %ILE
69th
KEV
Not listed

Published

March 12, 2026

Last Modified

September 8, 2026

Advisory Details (10)

Auto-updated Jun 10, 2026
Patch available. Sources: ubuntu.
genericMentions a patch (unverified)

[SECURITY] [DLA 4535-1] openssh security update

https://lists.debian.org/debian-lts-announce/2026/04/msg00014.html
generic

oss-security - Re: OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/18/7
generic

oss-security - Re: OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/18/5
generic

oss-security - Re: OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/18/4
generic

oss-security - Re: OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/18/2
generic

oss-security - Re: OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/14/4
generic

oss-security - Re: OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/14/3
generic

oss-security - OpenSSH GSSAPI keyex patch issue

http://www.openwall.com/lists/oss-security/2026/03/12/3
generic

oss-security - OpenSSH GSSAPI keyex patch issue

https://www.openwall.com/lists/oss-security/2026/03/12/3
ubuntuMentions a patch (unverified)

CVE-2026-3497 | Ubuntu

https://ubuntu.com/security/CVE-2026-3497

Vendor Advisories for CVE-2026-3497(20)

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

Patch Availability(30)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntussh-askpass-gnome (1:8.2p1-4ubuntu0.13+esm1) @ focal2026-09-01ubuntu
redhatrhaiis/model-opt-cuda-rhel9:17806819842026-06-10redhat
redhatrhcos-412.86.202605271418-02026-06-04redhat
redhatrhcos-413.92.202605271328-02026-06-04redhat
redhatrhcos-416.94.202605200242-02026-05-29redhat
redhatrhcos-4.19.9.6.202605201155-02026-05-27redhat
redhatrhaiis/vllm-rocm-rhel9:17792236512026-05-20redhat
redhatrhcos-417.94.202605112123-02026-05-20redhat
redhatrhaiis/vllm-cuda-rhel9:17792236542026-05-20redhat
redhatrhcos-414.92.202605060243-02026-05-13redhat
redhatrhcos-415.92.202605060220-02026-05-13redhat
redhatrhaiis/vllm-spyre-rhel9:17782445462026-05-12redhat
redhatrhcos-418.94.202604240015-02026-05-11redhat
redhatopenssh-0:8.0p1-15.el8_6.42026-05-11redhat
redhatrhaiis/vllm-rocm-rhel9:17782445312026-05-11redhat
redhatrhaiis/vllm-cuda-rhel9:17782746662026-05-11redhat
redhatrhaiis/model-opt-cuda-rhel9:17782445592026-05-11redhat
redhatopenssh-0:8.0p1-7.el8_4.12026-05-11redhat
redhatopenssh-0:8.0p1-20.el8_8.32026-05-07redhat
redhatopenssh-0:8.7p1-13.el9_0.22026-05-05redhat
redhatrhpam-7/rhpam-smartrouter-rhel8:7.13.5-4.17773257082026-05-05redhat
redhatopenssh-0:8.7p1-30.el9_2.102026-04-27redhat
redhatrhui5/rhua-rhel9:17768688422026-04-23redhat
redhatopenssh-0:8.7p1-38.el9_4.72026-04-22redhat
redhatopenssh-0:8.7p1-45.el9_6.22026-04-21redhat
redhatopenssh-0:9.9p1-7.el10_0.22026-04-08redhat
redhatopenssh-0:8.7p1-48.el9_72026-04-02redhat
redhatopenssh-0:8.0p1-28.el8_102026-04-02redhat
redhatopenssh-0:9.9p1-13.el10_12026-04-02redhat
redhatopenssh-main-10.2p1-9.hum12026-03-23redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:8.4p1-5 ... 1:8.4p1-5+deb11u5 (6 versions)
  • every version up to 1:8.4p1-5+deb11u6: fixed in 1:8.4p1-5+deb11u6
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:9.2p1-2 ... 1:9.2p1-2+deb12u8 (9 versions)
  • every version up to 1:9.2p1-2+deb12u9: fixed in 1:9.2p1-2+deb12u9
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:10.0p1-7, 1:10.0p1-7+deb13u1
  • every version up to 1:10.0p1-7+deb13u2: fixed in 1:10.0p1-7+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:10.0p1-7 ... 1:10.2p1-6~bpo13+1 (11 versions)
  • every version up to 1:10.2p1-6: fixed in 1:10.2p1-6
—

Weakness Classification(2)

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

Additional Vendor Advisories

(5)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 231 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:17 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-28 13:51 UTCEPSS rescore
  11. 2026-09-28 01:19 UTCOSV refresh
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:58 UTCEPSS rescore
  14. 2026-09-26 00:26 UTCEPSS rescore
  15. 2026-09-20 20:15 UTCEPSS rescore
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 19:28 UTCEPSS rescore
  18. 2026-09-17 19:30 UTCEPSS rescore
  19. 2026-09-16 14:08 UTCEPSS rescore
  20. 2026-09-16 05:15 UTCEPSS rescore
  21. 2026-09-15 03:11 UTCEPSS rescore
  22. 2026-09-12 15:01 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-11 09:37 UTCEPSS rescore
  25. 2026-09-10 09:34 UTCEPSS rescore
Show 75 more
  1. 2026-09-08 22:00 UTCEPSS rescore
  2. 2026-09-08 09:19 UTCEG score recompute
  3. 2026-09-08 09:19 UTCVendor advisory
  4. 2026-09-08 09:18 UTCGHSA enrichment
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-04 05:06 UTCEPSS rescore
  8. 2026-09-02 14:12 UTCEPSS rescore
  9. 2026-09-01 13:53 UTCEPSS rescore
  10. 2026-09-01 12:24 UTCEG score recompute
  11. 2026-09-01 12:24 UTCVendor advisory
  12. 2026-09-01 12:24 UTCGHSA enrichment
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-30 19:17 UTCEPSS rescore
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 14:46 UTCEPSS rescore
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-23 00:19 UTCEPSS rescore
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-21 12:32 UTCEG score recompute
  23. 2026-08-21 12:32 UTCVendor advisory
  24. 2026-08-21 12:32 UTCGHSA enrichment
  25. 2026-08-21 12:29 UTCMITRE cvelistV5CVSS v4 → 2.7
  26. 2026-08-20 22:55 UTCEPSS rescore
  27. 2026-08-19 17:03 UTCEPSS rescore
  28. 2026-08-18 13:48 UTCEPSS rescore
  29. 2026-08-17 13:47 UTCEPSS rescore
  30. 2026-08-16 14:56 UTCEPSS rescore
  31. 2026-08-16 11:41 UTCEG score recompute
  32. 2026-08-16 11:41 UTCVendor advisory
  33. 2026-08-16 11:41 UTCGHSA enrichment
  34. 2026-08-16 02:14 UTCEPSS rescore
  35. 2026-08-15 01:30 UTCEPSS rescore
  36. 2026-08-14 20:21 UTCVendor advisory
  37. 2026-08-14 20:21 UTCGHSA enrichment
  38. 2026-08-14 07:42 UTCEG score recompute
  39. 2026-08-14 07:42 UTCVendor advisory
  40. 2026-08-14 07:42 UTCGHSA enrichment
  41. 2026-08-13 22:00 UTCEPSS rescore
  42. 2026-08-12 22:44 UTCEG score recompute
  43. 2026-08-12 22:44 UTCVendor advisory
  44. 2026-08-12 22:44 UTCGHSA enrichment
  45. 2026-08-12 13:51 UTCEPSS rescore
  46. 2026-08-11 21:42 UTCEG score recompute
  47. 2026-08-11 21:42 UTCVendor advisory
  48. 2026-08-11 21:42 UTCGHSA enrichment
  49. 2026-08-11 13:43 UTCEPSS rescore
  50. 2026-08-11 04:51 UTCEG score recompute
  51. 2026-08-11 04:51 UTCVendor advisory
  52. 2026-08-11 04:50 UTCGHSA enrichment
  53. 2026-08-11 00:00 UTCEPSS rescore
  54. 2026-08-10 08:41 UTCVendor advisory
  55. 2026-08-10 08:41 UTCGHSA enrichment
  56. 2026-08-09 20:02 UTCEG score recompute
  57. 2026-08-09 20:02 UTCVendor advisory
  58. 2026-08-09 20:02 UTCGHSA enrichment
  59. 2026-08-09 13:46 UTCEPSS rescore
  60. 2026-08-09 07:23 UTCEG score recompute
  61. 2026-08-09 07:23 UTCVendor advisory
  62. 2026-08-09 07:23 UTCGHSA enrichment
  63. 2026-08-08 16:37 UTCEPSS rescore
  64. 2026-08-08 06:43 UTCVendor advisory
  65. 2026-08-08 06:43 UTCGHSA enrichment
  66. 2026-08-07 18:04 UTCEG score recompute
  67. 2026-08-07 18:04 UTCVendor advisory
  68. 2026-08-07 18:04 UTCGHSA enrichment
  69. 2026-08-06 19:48 UTCEG score recompute
  70. 2026-08-06 19:48 UTCVendor advisory
  71. 2026-08-06 19:48 UTCGHSA enrichment
  72. 2026-08-06 13:46 UTCEPSS rescore
  73. 2026-08-06 01:55 UTCEG score recompute
  74. 2026-08-06 01:55 UTCVendor advisory
  75. 2026-08-06 01:55 UTCGHSA enrichment

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

Frequently asked(5)

What is CVE-2026-3497?
CVE-2026-3497 is a high vulnerability published on March 12, 2026. Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpktdisconnect() on an error, which does not terminate the…
When was CVE-2026-3497 disclosed?
CVE-2026-3497 was first published on March 12, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3497 actively exploited?
CVE-2026-3497 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.3% probability of exploitation in the next 30 days (69th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-3497?
CVE-2026-3497 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-3497?
A fix for CVE-2026-3497 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-3497 are linked in the Vendor Advisories panel on this page.

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