Bug 2510028 (CVE-2026-67292)

Summary: CVE-2026-67292 FreeRDP: FreeRDP: Information Disclosure and Denial of Service via WebSocket Ping
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in FreeRDP, a remote desktop protocol client. A malicious server or WebSocket peer could send a specially crafted Ping control frame. This could cause the client to send an overly long Pong reply, leading to the disclosure of sensitive information beyond the intended payload. Additionally, sending a zero-length Ping could trigger an assertion, causing the client to terminate and resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2510321, 2510322, 2510323, 2510324    
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Description OSIDB Bzimport 2026-08-01 13:04:06 UTC 
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).