Memory Exhaustion Vulnerability in FreeRDP by FreeRDP Project
CVE-2026-121405

5.3MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121405?

FreeRDP versions earlier than 3.32.2 are susceptible to a memory exhaustion vulnerability that arises from improper handling of OutputBufferLength in serial device-control IRP requests. This flaw enables malicious servers to execute excessive memory allocation by sending crafted IRP_MJ_DEVICE_CONTROL requests, specifically using the IOCTL_USBPRINT_GET_1284_ID. As a result, attackers could exhaust the memory resources of clients connected to such servers, potentially leading to service disruption or denial of service.

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
.