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CVE WatchAug 1, 2026

CVE-2026-67292

FreeRDP before 3.29.0 contains a buffer over-disclosure vulnerability in the gateway WebSocket transport (libfreerdp/core/gateway/websocket.

CVSS

6.5

Medium

EPSS

KEV

Exploit Today

0-100

Published: Aug 1, 2026 · Last modified: Aug 1, 2026 · CWE-130

EPSS · 30d

Not enough EPSS history yet.

Technical 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).

Official references
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