How severe is CVE-2013-3127?

CVE-2013-3127 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2013-3127 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-3127?

CVE-2013-3127 primarily affects Microsoft Windows Media Format Runtime. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-3127?

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-2013-3127 published?

CVE-2013-3127 was published on 2013-07-10 and last updated on 2026-06-16.

CVE-2013-3127

CVE-2013-3127 is a critical-severity vulnerability in Microsoft Windows Media Format Runtime with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 22% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft Windows Media Format Runtime
Published: 2013-07-10
Last modified: 2026-06-16

Description

The Microsoft WMV video codec in wmv9vcm.dll, wmvdmod.dll in Windows Media Format Runtime 9 and 9.5, and wmvdecod.dll in Windows Media Format Runtime 11 and Windows Media Player 11 and 12 allows remote attackers to execute arbitrary code via a crafted media file, aka "WMV Video Decoder Remote Code Execution Vulnerability."

Frequently asked questions

What is CVE-2013-3127?: The Microsoft WMV video codec in wmv9vcm.dll, wmvdmod.dll in Windows Media Format Runtime 9 and 9.5, and wmvdecod.dll in Windows Media Format Runtime 11 and Windows Media Player 11 and 12 allows remote attackers to execute arbitrary code via a crafted media file, aka "WMV Video Decoder Remote Code Execution Vulnerability."
How severe is CVE-2013-3127?: CVE-2013-3127 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2013-3127 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3127?: CVE-2013-3127 primarily affects Microsoft Windows Media Format Runtime. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-3127?: 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-2013-3127 published?: CVE-2013-3127 was published on 2013-07-10 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:microsoft:windows_media_format_runtime:9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_format_runtime:9.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_format_runtime:11:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_player:11:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:windows_media_player:12:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Windows Media Format Runtime

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