Denial of Service Vulnerability in FreeRDP by FreeRDP
CVE-2026-121410

5.3MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121410?

FreeRDP versions before 3.32.2 are susceptible to a denial of service vulnerability related to the RDPGFX ALPHA WIRETOSURFACE_2 handler. This flaw occurs due to a failure to validate zero surface dimensions, allowing a malicious RDP server to transmit a specially crafted WIRETOSURFACE_2 Protocol Data Unit (PDU) with zero width and height. This can result in an assertion failure or division by zero, leading to an unexpected termination of the client session.

Affected Version(s)

FreeRDP 0 < 3.32.2

FreeRDP 3.32.2

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/freerdp-before-3.32....
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
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
opensec-intelligence
.