CVE-2026-67292FreeRDP before 3.29.0 WebSocket Ping Buffer Over-disclosure
Updated under an hour ago ()
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It affects FreeRDP. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
FreeRDP before 3.29.0 contains a buffer over-disclosure vulnerability in the gateway WebSocket transport (libfreerdp/core/gateway/websocket.c). The client's Pong reply reuses a fixed 1024-byte response stream whose length is not sealed to the actual received Ping payload, so a malicious gateway/WebSocket peer sending a non-empty Ping control frame causes the client to reply with an overlong Pong that discloses bytes beyond the received payload (the peer receives the masking key and can unmask the reply). A zero-length Ping reaches an assertion and terminates the client (denial of service).
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
- Weakness (CWE)
- CWE-130
- 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
- Analyzed
- Record last updated
- Aug 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
FreeRDP FreeRDP freerdp:freerdp (from the name) | before 3.29.0; 3.29.0 not affected | CNA record |
freerdp freerdp freerdp:freerdp | before 3.29.0 | NVD |
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8v6m-2cmc-chx9vendor-advisory, exploit
- https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319fpatch
- https://www.vulncheck.com/advisories/freerdp-before-websocket-ping-buffer-over-disclosurethird-party-advisory, patch
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.