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

Q: How do I fix CVE-2009-0894?

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

Q: Is CVE-2009-0894 being exploited?

CVE-2009-0894 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-2009-0894 affect?

CVE-2009-0894 affects xvid. Severity is high (CVSS 10.0). Heap-based buffer overflow in the decoder_create function in the initialization functionality in xvidcore/src/decoder.c in Xvid before 1.2.2, as used by Windows Media Player and other applications, allows remote attackers to execute arbitra

Q: How urgent is CVE-2009-0894?

Priority 63/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference

This week

HIGH 10.0UPGRADE

CVE-2009-0894 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.

Heap-based buffer overflow in the decoder_create function in the initialization functionality in xvidcore/src/decoder.c in Xvid before 1.2.2, as used by Windows Media Player and other applications, allows remote attackers to execute arbitrary code via vectors involving the DirectShow (aka DShow) frontend and improper handling of the XVID_ERR_MEMORY return code during processing of a crafted movie file. NOTE: some of these details are obtained fro

Why this priority

Critical severity
EPSS top 7%: 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	5.7% (top 7%)
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-2009-0894?

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

Is CVE-2009-0894 being exploited?

CVE-2009-0894 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-2009-0894 affect?

CVE-2009-0894 affects xvid. Severity is high (CVSS 10.0). Heap-based buffer overflow in the decoder_create function in the initialization functionality in xvidcore/src/decoder.c in Xvid before 1.2.2, as used by Windows Media Player and other applications, allows remote attackers to execute arbitra

How urgent is CVE-2009-0894?

Priority 63/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference

Software pages

Windows vulnerabilities

Related CVEs

CVE-2009-0893 HIGH 10.0 UPGRADE Multiple heap-based buffer overflows in xvidcore/src/decoder.c in the xvidcore library in Xvid before 1.2.2, a

References

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