CVE-2026-67293

MEDIUMPre-NVD 4.24.2—
EchelonGraph scoreHIGH confidence

Score 4.2 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-01. a secondary CVSS source baseline 4.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname validation vulnerability. The TLS hostname matcher (tls_match_hostname() in libfreerdp/crypto/tls.c) treats a wildcard pattern such as *.example.com as matching any hostname ending in .example.com, so it incorrectly accepts a wildcard certificate for multi-label subdomains like a.b.example.com (which OpenSSL's X509_check_host() rejects). This weakens TLS server authentication under wildcard-certificate conditions.

CVSS v3
4.2
EG Score
4.2(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

August 1, 2026

Last Modified

August 5, 2026

Advisory Details (3)

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

FreeRDP before 3.29.0 Improper Certificate Hostname Validation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-improper-certificate-hostname-validation
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 wildcard hostname matching accepts multi-label subdomains · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5wr6-8m8j-3h7f

Vendor Advisories for CVE-2026-67293(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 rangeFixed inDependents
freerdp22.10.0+dfsg1-1 ... 2.9.0+dfsg1-1~bpo11+1 (32 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
freerdp22.10.0+dfsg1-1 ... 2.11.7+dfsg1-6~deb12u1 (13 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.30.0+dfsg-1~bpo13+1 (43 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
freerdp33.15.0+dfsg-2.1 ... 3.28.0+dfsg-2 (37 versions)3.29.0+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 66× 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.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 16:25 UTCEG score recompute
  3. 2026-08-20 16:25 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 14:40 UTCEG score recompute
  6. 2026-08-19 14:40 UTCGHSA enrichment
  7. 2026-08-18 13:48 UTCEPSS rescore
  8. 2026-08-18 12:51 UTCEG score recompute
  9. 2026-08-18 12:51 UTCGHSA enrichment
  10. 2026-08-17 13:47 UTCEPSS rescore
  11. 2026-08-17 10:26 UTCEG score recompute
  12. 2026-08-17 10:26 UTCGHSA enrichment
  13. 2026-08-16 14:56 UTCEPSS rescore
  14. 2026-08-16 08:41 UTCEG score recompute
  15. 2026-08-16 08:41 UTCGHSA enrichment
  16. 2026-08-15 06:56 UTCEG score recompute
  17. 2026-08-15 06:56 UTCGHSA enrichment
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 04:29 UTCEG score recompute
  20. 2026-08-14 04:29 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-13 02:44 UTCEG score recompute
  23. 2026-08-13 02:44 UTCGHSA enrichment
  24. 2026-08-12 13:51 UTCEPSS rescore
  25. 2026-08-12 00:59 UTCEG score recompute
Show 41 more
  1. 2026-08-12 00:59 UTCGHSA enrichment
  2. 2026-08-11 00:00 UTCEPSS rescore
  3. 2026-08-10 23:14 UTCGHSA enrichment
  4. 2026-08-09 21:29 UTCEG score recompute
  5. 2026-08-09 21:29 UTCGHSA enrichment
  6. 2026-08-09 13:47 UTCEPSS rescore
  7. 2026-08-08 19:44 UTCEG score recompute
  8. 2026-08-08 19:44 UTCGHSA enrichment
  9. 2026-08-08 16:37 UTCEPSS rescore
  10. 2026-08-07 17:58 UTCEG score recompute
  11. 2026-08-07 17:58 UTCGHSA enrichment
  12. 2026-08-06 16:13 UTCEG score recompute
  13. 2026-08-06 16:13 UTCGHSA enrichment
  14. 2026-08-06 13:47 UTCEPSS rescore
  15. 2026-08-05 19:17 UTCEPSS rescore
  16. 2026-08-05 19:17 UTCEPSS rescore
  17. 2026-08-05 14:28 UTCEG score recompute
  18. 2026-08-05 14:28 UTCGHSA enrichment
  19. 2026-08-05 13:49 UTCEG score recompute
  20. 2026-08-05 13:49 UTCGHSA enrichment
  21. 2026-08-05 05:29 UTCEG score recompute
  22. 2026-08-05 05:29 UTCGHSA enrichment
  23. 2026-08-05 04:43 UTCEG score recompute
  24. 2026-08-05 04:42 UTCGHSA enrichment
  25. 2026-08-04 22:06 UTCEG score recompute
  26. 2026-08-04 22:06 UTCGHSA enrichment
  27. 2026-08-04 15:10 UTCEPSS rescore
  28. 2026-08-04 10:39 UTCEPSS rescore
  29. 2026-08-03 20:20 UTCEG score recompute
  30. 2026-08-03 20:20 UTCGHSA enrichment
  31. 2026-08-03 20:14 UTCGHSA enrichment
  32. 2026-08-03 19:38 UTCEG score recompute
  33. 2026-08-03 19:38 UTCGHSA enrichment
  34. 2026-08-03 16:50 UTCEG score recompute
  35. 2026-08-03 16:50 UTCGHSA enrichment
  36. 2026-08-03 10:36 UTCEPSS rescore
  37. 2026-08-02 15:05 UTCEG score recompute
  38. 2026-08-02 15:05 UTCGHSA enrichment
  39. 2026-08-01 13:19 UTCEG score recompute
  40. 2026-08-01 12:44 UTCEG score recompute
  41. 2026-08-01 12:42 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-67293?
CVE-2026-67293 is a medium vulnerability published on August 1, 2026. FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper certificate hostname validation vulnerability. The TLS hostname matcher (tlsmatchhostname() in libfreerdp/crypto/tls.c) treats a wildcard pattern such as *.example.com as matching any hostname ending in .example.com, so it…
When was CVE-2026-67293 disclosed?
CVE-2026-67293 was first published in the National Vulnerability Database on August 1, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67293 actively exploited?
CVE-2026-67293 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 93.7% of all scored CVEs.
What is the CVSS score of CVE-2026-67293?
CVE-2026-67293 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2026-67293?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67293, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-67293

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