CVE-2026-121959

MEDIUM 6.5

FreeRDP before 3.32.2 Infinite Loop via Truncated WebSocket Frame

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

FreeRDP before 3.32.2 contains an infinite loop vulnerability in websocket_context_read that fails to handle a zero BIO result with payload outstanding. A malicious RD Gateway can send a truncated WebSocket frame followed by a TLS close_notify, causing a client thread to spin and consume CPU until killed.

CWE	CWE-835
Vendor	freerdp
Product	freerdp
Published	Nov 4, 2026
Last Updated	Nov 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

FreeRDP / FreeRDP

0 < 3.32.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x26g-fp9v-c2pg vulncheck.com: https://www.vulncheck.com/advisories/freerdp-before-3.32.2-infinite-loop-via-truncated-websocket-frame

Credits

Kushalkhemka mayank-jangid-moon opensec-intelligence