CVE-2026-67296

FreeRDP before 3.29.0 contains a denial of service vulnerability in the RDPEI server channel handler that fails to validate maximum PDU body length before stream allocation. A malicious RDP client can send a header-only RDPEI message with a large declared body length to force excessive memory allocation on the server.

Score

CVSS 4.0 8.7 High

Status

Analyzed - disclosure@vulncheck.com

Published

2026-08-01

Last modified

2026-08-03

Weaknesses

CWE-20

Affected products

• Freerdp (Freerdp)

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jm8r-22j6-4m4v
• https://www.vulncheck.com/advisories/freerdp-before-denial-of-service-via-rdpei-pdu