Understanding and Defending Against CVE-2026-111881: Integer Underflow in FreeRDP
CVE-2026-111881 is a high-severity vulnerability in FreeRDP, a popular open-source implementation of the Remote Desktop Protocol (RDP). This vulnerability, caused by an integer underflow in the WinPR BMP writer, allows a malicious RDP clipboard peer to crash the client or execute an out-of-bounds write, potentially leading to code execution or denial of service. FreeRDP versions from 3.14.1 to before 3.32.0 are affected. Understanding this vulnerability is crucial for defenders to protect their infrastructure and users from potential attacks.