CVE-2026-67292
CRITICAL
9,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM
6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: low
Description
AI Translation Available
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).
130
Improper Handling of Length Parameter Inconsistency
IncompleteCommon Consequences
Security Scopes Affected:
Confidentiality
Integrity
Potential Impacts:
Read Memory
Modify Memory
Varies By Context
Applicable Platforms
Languages:
C, C++, Not Language-Specific
https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af3…
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8v6m-2cmc-chx9
https://www.vulncheck.com/advisories/freerdp-before-websocket-ping-buffer-over-…