Is CVE-2009-4311 in the CISA KEV catalog?

No. CVE-2009-4311 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-4311?

CVE-2009-4311 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2009-4311?

CVE-2009-4311 has an EPSS score of 21.95% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-4311

HIGHEPSS 97th pctl

9.3

CVSS v2

NVD

Description

Unspecified vulnerability in the Indeo codec in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote attackers to execute arbitrary code via crafted media content, as reported to Microsoft by Paul Byrne of NGS Software. NOTE: this might overlap CVE-2008-3615.

CWE-94Code Injection

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

21.95%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.