CVE-2009-0893: Xvid

High severity, CVSS 10.0. EPSS: 6.5% chance of exploitation in the next 30 days.

Multiple heap-based buffer overflows in xvidcore/src/decoder.c in the xvidcore library in Xvid before 1.2.2, as used by Windows Media Player and other applications, allow remote attackers to execute arbitrary code by providing a crafted macroblock (aka MBlock) number in a video stream in a crafted movie file that triggers heap memory corruption, related to a "missing resync marker range check" and the (1) decoder_iframe, (2) decoder_pframe, and (3) decoder_bframe functions.

Affected products

• Xvid Xvid: up to and including 1.2.1; version 1.1.0 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.2.0 only

Published 2009-06-02. Last modified 2026-06-16.