CVE-2026-109952FreeRDP 3.0.0 before 3.32.0 Security Protocol Downgrade via Negotiation Response
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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The FreeRDP client 3.0.0 before 3.32.0 does not check a server-selected PROTOCOL_RDSTLS or PROTOCOL_HYBRID_EX against its enabled protocol set in nego_process_negotiation_response(), allowing a security protocol downgrade. A malicious server or man-in-the-middle can select RDSTLS to override /sec:nla pinning, complete authentication with an all-zero cookie, and receive the user's cleartext password in the Client Info PDU.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-757
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Undergoing Analysis
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
FreeRDP FreeRDP freerdp:freerdp (from the name) | from 3.0.0 before 3.32.0; 3.32.0 not affected | CNA record |
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qq23-mqmv-pc65vendor-advisory
- https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-security-protocol-downgrade-via-negotiation-responsethird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.