RDP Client Vulnerability in FreeRDP by FreeRDP
CVE-2026-109946

7.1HIGH

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
13 October 2026

What is CVE-2026-109946?

FreeRDP versions prior to 3.32.0 contain a flaw in AVC444 and AVC444v2 region width validation leading to assertions and client termination. A malicious RDP server can exploit this issue by sending an in-bounds region rectangle with an odd width during RDPGFX AVC444 negotiation, causing connected FreeRDP clients to abort. This vulnerability underscores the importance of robust validation mechanisms in remote desktop protocols to prevent service disruptions.

Affected Version(s)

FreeRDP 3.11.0 < 3.32.0

FreeRDP 3.32.0

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/freerdp-3.11.0-befor...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kushalkhemka
mayank-jangid-moon
skigeek16
opensec-intelligence
.