CVE-2026-67292 FreeRDP before 3.29.0 WebSocket Ping Buffer Over-disclosure
A malicious WebSocket peer can cause FreeRDP clients to disclose memory contents or crash via crafted Ping frames.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-67292?
CVE-2026-67292 is a critical vulnerability in Freerdp Freerdp, published on 1 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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).
Weakness: CWE-130
Which versions are affected by CVE-2026-67292?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-67292?
Upgrade to a fixed version.
Is CVE-2026-67292 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67292 exists.
Other vulnerabilities in Freerdp Freerdp
- CVE-2021-37594 Other in n/a
- CVE-2021-37595 Other in n/a
- CVE-2026-67305 FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
- CVE-2026-66402 FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass
- CVE-2026-67289 FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection
Sources
Also known as DEBIAN-CVE-2026-67292, GHSA-8v6m-2cmc-chx9, GHSA-v4xr-wq7x-967g, UBUNTU-CVE-2026-67292.