How severe is CVE-2009-0893?

CVE-2009-0893 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-0893 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0893?

CVE-2009-0893 primarily affects Xvid. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0893?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-0893 published?

CVE-2009-0893 was published on 2009-06-02 and last updated on 2026-06-16.

CVE-2009-0893

CVE-2009-0893 is a critical-severity vulnerability in Xvid with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Xvid
Published: 2009-06-02
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2009-0893?: 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.
How severe is CVE-2009-0893?: CVE-2009-0893 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-0893 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0893?: CVE-2009-0893 primarily affects Xvid. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0893?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-0893 published?: CVE-2009-0893 was published on 2009-06-02 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:xvid:xvid:*:*:*:*:*:*:*:*
cpe:2.3:a:xvid:xvid:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:xvid:xvid:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:xvid:xvid:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:xvid:xvid:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:xvid:xvid:1.2.0:*:*:*:*:*:*:*

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