CVE-2026-67294

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-01. A secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

FreeRDP before 3.29.0 improperly validates the Extended Key Usage (EKU) purpose of the peer certificate during client-side server TLS authentication. In x509_utils_verify(), when server-purpose (X509_PURPOSE_SSL_SERVER) verification fails, the code falls back to client-purpose and any-purpose verification, so a trusted, hostname-matching certificate valid only for clientAuth can be accepted as the RDP server certificate. In environments relying on EKU separation between client and server certificates, this allows a clientAuth-only certificate issued by a trusted CA to bypass server certificate purpose validation.

CVSS v3
5.9
EG Score
5.9MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100CISA SSVC

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
Severity59% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 1, 2026

Last Modified

September 11, 2026

Advisory Details (3)

Auto-updated Aug 1, 2026
Patch available. Sources: github, github_commit.
generic

FreeRDP before 3.29.0 TLS Certificate EKU Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-tls-certificate-eku-bypass
github_commit

commit f3b434710511 (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit f3b434710511 — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f
github Patch Available

FreeRDP accepts clientAuth-only EKU certificates for server TLS authentication · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-89c6-jjrw-96h4

Vendor Advisories for CVE-2026-67294(1)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp22.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp22.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp33.15.0+dfsg-2.1 ... 3.32.1+dfsg-1~bpo13+1 (49 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
freerdp33.15.0+dfsg-2.1 ... 3.28.0+dfsg-2 (37 versions)
  • every version up to 3.29.0+dfsg-1: fixed in 3.29.0+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 63× 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 162 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-67294?
CVE-2026-67294 is a medium vulnerability published on August 1, 2026. FreeRDP before 3.29.0 improperly validates the Extended Key Usage (EKU) purpose of the peer certificate during client-side server TLS authentication. In x509utilsverify(), when server-purpose (X509PURPOSESSL_SERVER) verification fails, the code falls back to client-purpose and any-purpose…
When was CVE-2026-67294 disclosed?
CVE-2026-67294 was first published on August 1, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67294 actively exploited?
CVE-2026-67294 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67294?
CVE-2026-67294 has a CVSS base score of 5.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-67294?
A fix for CVE-2026-67294 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-67294 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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