CVE-2026-91960
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer wraparound, resulting in a double free that crashes the FreeRDP client during connection.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FreeRDP | FreeRDP | 0 < 3.31.0 | affected |
| FreeRDP | FreeRDP | 3.31.0 | unaffected |
Weaknesses
- CWE-190: Integer Overflow or Wraparound
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
Additional References
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-vccg-35r5-8jrf
- https://www.vulncheck.com/advisories/freerdp-before-3.31.0-integer-overflow-double-free
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