CVE-2009-0893: Multiple heap-based buffer overflows in xvidcore/src/decoder.c in the xvidcore library in Xvid before 1.2.2, a

Q: How do I fix CVE-2009-0893?

xvid: upgrade to newer than 1.2.1. Exact commands for each OS are on this page.

Q: Is CVE-2009-0893 being exploited?

CVE-2009-0893 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2009-0893 affect?

CVE-2009-0893 affects xvid. Severity is high (CVSS 10.0). 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 mac

Q: How urgent is CVE-2009-0893?

Priority 63/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference

This week

HIGH 10.0UPGRADE

CVE-2009-0893 is a high-severity flaw (CVSS 10.0) affecting xvid. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 (

Why this priority

Critical severity
EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	6.5% (top 6%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-06-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: xvid

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-06-02 18:30 UTCPublished CVE record published
2026-06-16 23:06 UTCUpdated Record last modified

xvid xvid UPGRADE

Affected: <= 1.2.1 · 1.1.0 · 1.1.1 · 1.1.2 · 1.1.3 · 1.2.0

Fixed in: newer than 1.2.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xvid || rpm -q xvid || xvid --version

2. UPGRADE to newer than 1.2.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xvid

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xvid

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2009-0893?

xvid: upgrade to newer than 1.2.1. Exact commands for each OS are on this page.

Is CVE-2009-0893 being exploited?

CVE-2009-0893 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2009-0893 affect?

CVE-2009-0893 affects xvid. Severity is high (CVSS 10.0). 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 mac

How urgent is CVE-2009-0893?

Priority 63/100. Critical severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Software pages

Windows vulnerabilities

Related CVEs

CVE-2009-0894 HIGH 10.0 UPGRADE Heap-based buffer overflow in the decoder_create function in the initialization functionality in xvidcore/src/

References

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