CVE-2026-67292
CVE-2026-67292 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-130.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v4: 9.3
- EPSS exploit prediction: 0% (18th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-130
- Published:
- Last modified:
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).
Frequently asked questions
- What is CVE-2026-67292?
- 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).
- How severe is CVE-2026-67292?
- CVE-2026-67292 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
- Is CVE-2026-67292 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-67292?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-67292 published?
- CVE-2026-67292 was published on 2026-08-01 and last updated on 2026-08-03.
References
- https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8v6m-2cmc-chx9
- https://www.vulncheck.com/advisories/freerdp-before-websocket-ping-buffer-over-disclosure
Other CWE-130 vulnerabilities
- CVE-2022-2714 — Critical (CVSS 9.8): Improper Handling of Length Parameter Inconsistency in GitHub repository francoisjacquet/rosariosis prior to 10.0.
- CVE-2026-9054 — Critical (CVSS 9.2): An attacker sending tcp, il, rudp, rudp, or gre packets with a length less than the header size would trigger a kernel…
- CVE-2022-1543 — High (CVSS 8.8): Improper handling of Length parameter in GitHub repository erudika/scoold prior to 1.49.4. When the text size is large…
- CVE-2026-3868 — High (CVSS 8.7): An improper handling of the length parameter inconsistency vulnerability has been identified in Moxa’s Secure…
- CVE-2026-5367 — High (CVSS 8.6): A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host…
- CVE-2022-20870 — High (CVSS 8.6): A vulnerability in the egress MPLS packet processing function of Cisco IOS XE Software for Cisco Catalyst 3650,…