How severe is CVE-2009-1331?

CVE-2009-1331 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-1331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1331?

CVE-2009-1331 affects Microsoft Windows Media Player. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-1331?

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-2009-1331 published?

CVE-2009-1331 was published on 2009-04-17 and last updated on 2026-06-16.

CVE-2009-1331

CVE-2009-1331 is a critical-severity vulnerability in Microsoft Windows Media Player with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-189.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-189
Affected product: Microsoft Windows Media Player
Published: 2009-04-17
Last modified: 2026-06-16

Description

Integer overflow in Microsoft Windows Media Player (WMP) 11.0.5721.5260 allows remote attackers to cause a denial of service (application crash) via a crafted .mid file, as demonstrated by crash.mid.

Frequently asked questions

What is CVE-2009-1331?: Integer overflow in Microsoft Windows Media Player (WMP) 11.0.5721.5260 allows remote attackers to cause a denial of service (application crash) via a crafted .mid file, as demonstrated by crash.mid.
How severe is CVE-2009-1331?: CVE-2009-1331 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-1331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1331?: CVE-2009-1331 affects Microsoft Windows Media Player. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-1331?: 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-2009-1331 published?: CVE-2009-1331 was published on 2009-04-17 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:windows_media_player:11.0.5721.5260:*:*:*:*:*:*:*

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