CVE-2026-35387

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

April 2, 2026

Last Modified

July 24, 2026

Advisory Details (3)

Auto-updated Jul 25, 2026
No patch confirmed yet.
generic

oss-security - Announce: OpenSSH 10.3 released

https://www.openwall.com/lists/oss-security/2026/04/02/3
generic

OpenSSH: Release Notes

https://www.openssh.org/releasenotes.html#10.3p1
generic

'Announce: OpenSSH 10.3 released' - MARC

https://marc.info/?l=openssh-unix-dev&m=177513443901484&w=2

Vendor Advisories for CVE-2026-35387(17)

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

Patch Availability(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntussh-askpass-gnome (1:10.2p1-2ubuntu3.2) @ resolute2026-07-26ubuntu
redhatrhaiis/model-opt-cuda-rhel9:17806819842026-06-10redhat
redhatopenssh-0:8.7p1-38.el9_4.82026-06-03redhat
redhatopenssh-0:8.7p1-30.el9_2.112026-06-02redhat
redhatopenssh-0:8.0p1-7.el8_4.22026-06-01redhat
redhatopenssh-0:8.0p1-15.el8_6.52026-05-27redhat
redhatrhui5/rhua-rhel9:17797982222026-05-27redhat
redhatopenssh-0:8.0p1-20.el8_8.42026-05-27redhat
redhatopenssh-0:9.9p1-7.el9_82026-05-19redhat
redhatopenssh-0:9.9p1-23.el10_22026-05-19redhat
redhatopenssh-0:8.7p1-45.el9_6.32026-05-11redhat
redhatdiscovery/discovery-server-rhel9:17781015792026-05-07redhat
redhatopenssh-0:9.9p1-14.el10_12026-05-04redhat
redhatopenssh-0:8.0p1-29.el8_102026-05-04redhat
redhatopenssh-0:8.7p1-49.el9_72026-05-04redhat
redhatopenssh-0:9.9p1-7.el10_0.32026-04-30redhat

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 rangeFixed inDependents
openssh1:8.4p1-5 ... 1:8.4p1-5+deb11u6 (7 versions)1:8.4p1-5+deb11u7—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openssh1:9.2p1-2 ... 1:9.2p1-2+deb12u9 (10 versions)1:9.2p1-2+deb12u10—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openssh1:10.0p1-7, 1:10.0p1-7+deb13u1, 1:10.0p1-7+deb13u21:10.0p1-7+deb13u3—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openssh1:10.0p1-7 ... 1:10.3p1-1~bpo13+1 (13 versions)1:10.3p1-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

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 8× in last 7d / 28× 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 194 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 19:30 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-15 03:11 UTCEPSS rescore
  7. 2026-09-13 16:47 UTCEPSS rescore
  8. 2026-09-12 15:01 UTCEPSS rescore
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 09:37 UTCEPSS rescore
  11. 2026-09-10 09:34 UTCEPSS rescore
  12. 2026-09-08 22:00 UTCEPSS rescore
  13. 2026-09-07 16:01 UTCEPSS rescore
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-02 11:34 UTCOSV refresh
  18. 2026-09-01 13:53 UTCEPSS rescore
  19. 2026-09-01 04:39 UTCEPSS rescore
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 01:22 UTCEPSS rescore
  22. 2026-08-28 21:41 UTCEPSS rescore
  23. 2026-08-27 14:25 UTCEPSS rescore
  24. 2026-08-26 14:46 UTCEPSS rescore
  25. 2026-08-25 13:49 UTCEPSS rescore
Show 75 more
  1. 2026-08-23 00:19 UTCEPSS rescore
  2. 2026-08-21 23:49 UTCEPSS rescore
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 09:22 UTCEG score recompute
  9. 2026-08-16 09:22 UTCVendor advisory
  10. 2026-08-16 09:22 UTCGHSA enrichment
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-14 05:48 UTCEG score recompute
  14. 2026-08-14 05:48 UTCVendor advisory
  15. 2026-08-14 05:48 UTCGHSA enrichment
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-12 20:07 UTCEG score recompute
  18. 2026-08-12 20:07 UTCVendor advisory
  19. 2026-08-12 20:07 UTCGHSA enrichment
  20. 2026-08-12 13:50 UTCEPSS rescore
  21. 2026-08-11 08:54 UTCEG score recompute
  22. 2026-08-11 08:54 UTCVendor advisory
  23. 2026-08-11 08:54 UTCGHSA enrichment
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 07:08 UTCEG score recompute
  26. 2026-08-10 07:08 UTCVendor advisory
  27. 2026-08-10 07:08 UTCGHSA enrichment
  28. 2026-08-09 13:46 UTCEPSS rescore
  29. 2026-08-09 05:20 UTCEG score recompute
  30. 2026-08-09 05:20 UTCVendor advisory
  31. 2026-08-09 05:20 UTCGHSA enrichment
  32. 2026-08-08 16:37 UTCEPSS rescore
  33. 2026-08-07 15:26 UTCEG score recompute
  34. 2026-08-07 15:26 UTCVendor advisory
  35. 2026-08-07 15:26 UTCGHSA enrichment
  36. 2026-08-06 13:46 UTCEPSS rescore
  37. 2026-08-06 00:23 UTCEG score recompute
  38. 2026-08-06 00:23 UTCVendor advisory
  39. 2026-08-06 00:23 UTCGHSA enrichment
  40. 2026-08-05 19:17 UTCEPSS rescore
  41. 2026-08-04 15:10 UTCEPSS rescore
  42. 2026-08-04 10:38 UTCEPSS rescore
  43. 2026-08-03 22:43 UTCEG score recompute
  44. 2026-08-03 22:43 UTCVendor advisory
  45. 2026-08-03 22:43 UTCGHSA enrichment
  46. 2026-08-03 10:36 UTCEPSS rescore
  47. 2026-08-02 14:40 UTCEG score recompute
  48. 2026-08-02 14:40 UTCVendor advisory
  49. 2026-08-02 14:40 UTCGHSA enrichment
  50. 2026-08-02 02:27 UTCEPSS rescore
  51. 2026-08-01 04:16 UTCEPSS rescore
  52. 2026-07-30 16:28 UTCEPSS rescore
  53. 2026-07-30 01:30 UTCEPSS rescore
  54. 2026-07-27 14:13 UTCEPSS rescore
  55. 2026-07-26 14:54 UTCEPSS rescore
  56. 2026-07-26 14:54 UTCEPSS rescore
  57. 2026-07-26 09:28 UTCEG score recompute▲ 3.40
  58. 2026-07-26 09:28 UTCVendor advisory
  59. 2026-07-26 09:28 UTCGHSA enrichment
  60. 2026-07-25 14:18 UTCEPSS rescore
  61. 2026-07-25 14:18 UTCEPSS rescore
  62. 2026-07-24 22:12 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  63. 2026-07-24 14:17 UTCEPSS rescore
  64. 2026-07-24 14:17 UTCEPSS rescore
  65. 2026-07-23 14:18 UTCEPSS rescore
  66. 2026-07-23 14:18 UTCEPSS rescore
  67. 2026-07-23 03:10 UTCEG score recompute
  68. 2026-07-22 14:08 UTCEPSS rescore
  69. 2026-07-21 15:24 UTCEPSS rescore
  70. 2026-07-20 17:08 UTCEPSS rescore
  71. 2026-07-19 14:31 UTCEPSS rescore
  72. 2026-07-19 02:29 UTCEPSS rescore
  73. 2026-07-18 10:04 UTCEPSS rescore
  74. 2026-07-16 17:03 UTCEPSS rescore
  75. 2026-07-16 04:23 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-35387?
CVE-2026-35387 is a medium vulnerability published on April 2, 2026. OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
When was CVE-2026-35387 disclosed?
CVE-2026-35387 was first published in the National Vulnerability Database on April 2, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-35387 actively exploited?
CVE-2026-35387 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 84.9% of all scored CVEs.
What is the CVSS score of CVE-2026-35387?
CVE-2026-35387 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-35387?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-35387, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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