Denial of Service Vulnerability in FreeRDP from FreeRDP Project
CVE-2026-121403

5.3MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121403?

FreeRDP versions prior to 3.32.2 are susceptible to a denial of service vulnerability caused by malformed DEVICE_IOREQUESTs. When a malicious RDP server sends a truncated IRP_MJ_CREATE request, it can cause the drive worker to fail silently. This leads to a scenario where additional requests are sent, ultimately accumulating in the IrpQueue and consuming excessive memory resources. As a result, this can result in a loss of session availability, impacting overall system performance and user experience.

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
.