CVE-2026-33986

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A remote attacker could exploit a memory allocation vulnerability in the H.264 codec by enticing a user to connect to a malicious server. This flaw occurs when internal buffer dimensions are incorrectly updated after a failed memory reallocation, potentially leading to a heap-based buffer overflow. Successful exploitation could result in arbitrary code execution or a denial of service (DoS), compromising the availability, integrity, and confidentiality of the affected system.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.