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Vulnerability record · CVE-2009-0893 · published 2 June 2009

CVE-2009-0893: Xvid memory buffer overflow vulnerability

Xvid · Xvid

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.

10.0 CVSS 2.0 High EPSS 6.5% · top 6.5% CWE-119 · Memory buffer overflow
10.0CVSS 2.0 base score
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://cvs.xvid.org/cvs/viewvc.cgi/xvidcore/src/decoder.c
http://cvs.xvid.org/cvs/viewvc.cgi/xvidcore/src/decoder.c?r1=1.80&r2=1.81 ExploitPatch
http://secunia.com/advisories/35274 Vendor Advisory
http://www.securityfocus.com/bid/35156
http://www.vupen.com/english/advisories/2009/1468 Vendor Advisory
http://www.xvid.org/News.64.0.html?&cHash=0170b4e439&tx_ttnews%5BbackPid%5D=64&tx_ttnews%5Btt_news%5D=7
https://www.it-isac.org/postings/cyber/alertdetail.php?id=4634&selyear=2009&menutype=menupublic
http://cvs.xvid.org/cvs/viewvc.cgi/xvidcore/src/decoder.c
http://cvs.xvid.org/cvs/viewvc.cgi/xvidcore/src/decoder.c?r1=1.80&r2=1.81 ExploitPatch
http://secunia.com/advisories/35274 Vendor Advisory
http://www.securityfocus.com/bid/35156
http://www.vupen.com/english/advisories/2009/1468 Vendor Advisory
http://www.xvid.org/News.64.0.html?&cHash=0170b4e439&tx_ttnews%5BbackPid%5D=64&tx_ttnews%5Btt_news%5D=7
https://www.it-isac.org/postings/cyber/alertdetail.php?id=4634&selyear=2009&menutype=menupublic

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-0893), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.