How severe is CVE-2009-4313?

CVE-2009-4313 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-4313 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4313?

CVE-2009-4313 primarily affects Microsoft Windows 2000. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4313?

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-2009-4313 published?

CVE-2009-4313 was published on 2009-12-13 and last updated on 2026-06-16.

CVE-2009-4313

CVE-2009-4313 is a critical-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Windows 2000
Published: 2009-12-13
Last modified: 2026-06-16

Description

ir32_32.dll 3.24.15.3 in the Indeo32 codec in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote attackers to cause a denial of service (heap corruption) or execute arbitrary code via malformed data in a stream in a media file, as demonstrated by an AVI file.

Frequently asked questions

What is CVE-2009-4313?: ir32_32.dll 3.24.15.3 in the Indeo32 codec in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 allows remote attackers to cause a denial of service (heap corruption) or execute arbitrary code via malformed data in a stream in a media file, as demonstrated by an AVI file.
How severe is CVE-2009-4313?: CVE-2009-4313 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-4313 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4313?: CVE-2009-4313 primarily affects Microsoft Windows 2000. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4313?: 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-2009-4313 published?: CVE-2009-4313 was published on 2009-12-13 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*
cpe:2.3:o:microsoft:windows_2003_server:*:sp2:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*

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