CVE-2026-72746

✕ Withdrawn — historical dataHIGHPre-NVD 7.5Elevated
7.5CVSS
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

FreeRDP before 3.30.0 contains a server-side authentication bypass in the RDSTLS handshake. When a server is configured with RdstlsSecurity = TRUE, the handshake dispatches inbound PDUs based solely on the attacker-supplied wire pduType without verifying that the received PDU is the one required at the current step. Because the rdpRdstls object is calloc-zeroed, its resultCode defaults to 0 (RDSTLS_RESULT_SUCCESS). An unauthenticated remote client can send a Capabilities PDU instead of the required Authentication Request PDU; rdstls_process_capabilities() returns success without ever setting resultCode, so the server responds with an AUTHRSP carrying resultCode SUCCESS and treats the session as authenticated without evaluating any password, redirection GUID, or auto-reconnect cookie. This affects the released FreeRDP 3.x series (e.g., 3.27.1) and master HEAD; at the time of the advisory no patched version was available.

CVSS v3
7.5
EchelonGraph score
Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EG Score
—
EG Risk
—
EPSS PROB
0.4%
EPSS %ILE
35th
KEV
Not listed

Published

August 11, 2026

Last Modified

August 11, 2026

Advisory Details (3)

Auto-updated Aug 11, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

FreeRDP before 3.30.0 RDSTLS Server Authentication Bypass via PDU-type Confusion | Advisories | VulnCheck

https://www.vulncheck.com/advisories/freerdp-before-rdstls-server-authentication-bypass-via-pdu-type-confusion
github_commit

commit b05a9510787c (FreeRDP/FreeRDP)

Fix landed in FreeRDP/FreeRDP commit b05a9510787c — awaiting tagged release

https://github.com/FreeRDP/FreeRDP/commit/b05a9510787c83c87ffc5fa8d7cc9f06ed971695
github Patch Available🟡 PoC Available

RDSTLS server authentication bypass: a credential-less Capabilities PDU is accepted at the auth step (fail-open `resultCode`) · Advisory · FreeRDP/FreeRDP · GitHub

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rqgv-grx4-xm6x

Vendor Advisories for CVE-2026-72746(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 3× in last 7d / 11× 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. 2026-10-03 21:27 UTCGHSA enrichment
  2. 2026-09-30 22:19 UTCEG score recompute
  3. 2026-09-30 22:19 UTCGHSA enrichment
  4. 2026-09-28 02:20 UTCGHSA enrichment
  5. 2026-09-25 03:56 UTCGHSA enrichment
  6. 2026-09-21 21:13 UTCGHSA enrichment
  7. 2026-09-19 01:06 UTCGHSA enrichment
  8. 2026-09-16 05:07 UTCGHSA enrichment
  9. 2026-09-13 08:48 UTCGHSA enrichment
  10. 2026-09-10 12:56 UTCGHSA enrichment
  11. 2026-09-07 17:04 UTCGHSA enrichment
  12. 2026-09-04 12:36 UTCGHSA enrichment
  13. 2026-09-01 16:43 UTCGHSA enrichment
  14. 2026-08-29 20:51 UTCGHSA enrichment
  15. 2026-08-26 21:28 UTCGHSA enrichment
  16. 2026-08-24 01:37 UTCGHSA enrichment
  17. 2026-08-21 05:46 UTCGHSA enrichment
  18. 2026-08-18 09:54 UTCGHSA enrichment
  19. 2026-08-15 14:02 UTCGHSA enrichment
  20. 2026-08-12 18:10 UTCEG score recompute▼ 7.50
  21. 2026-08-12 18:10 UTCGHSA enrichment
  22. 2026-08-12 13:51 UTCEPSS rescore
  23. 2026-08-12 05:23 UTCGHSA enrichment
  24. 2026-08-11 16:36 UTCEG score recompute
  25. 2026-08-11 16:36 UTCGHSA enrichment
Show 4 more
  1. 2026-08-11 15:22 UTCEG score recompute
  2. 2026-08-11 13:25 UTCEG score recompute
  3. 2026-08-11 12:22 UTCEG score recompute
  4. 2026-08-11 12:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72746?
CVE-2026-72746 is a high vulnerability published on August 11, 2026. FreeRDP before 3.30.0 contains a server-side authentication bypass in the RDSTLS handshake. When a server is configured with RdstlsSecurity = TRUE, the handshake dispatches inbound PDUs based solely on the attacker-supplied wire pduType without verifying that the received PDU is the one required at…
When was CVE-2026-72746 disclosed?
CVE-2026-72746 was first published on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72746 actively exploited?
CVE-2026-72746 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72746?
CVE-2026-72746 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72746?
A fix for CVE-2026-72746 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72746 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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