How severe is CVE-2011-3401?

CVE-2011-3401 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2011-3401 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-2011-3401?

CVE-2011-3401 primarily affects Microsoft Windows 7. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-3401?

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-2011-3401 published?

CVE-2011-3401 was published on 2011-12-14 and last updated on 2026-06-16.

CVE-2011-3401

CVE-2011-3401 is a critical-severity vulnerability in Microsoft Windows 7 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-94.

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-94
Affected product: Microsoft Windows 7
Published: 2011-12-14
Last modified: 2026-06-16

Description

ENCDEC.DLL in Windows Media Player and Media Center in Microsoft Windows XP SP2 and SP3, Windows Vista SP2, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .dvr-ms file, aka "Windows Media Player DVR-MS Memory Corruption Vulnerability."

Frequently asked questions

What is CVE-2011-3401?: ENCDEC.DLL in Windows Media Player and Media Center in Microsoft Windows XP SP2 and SP3, Windows Vista SP2, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .dvr-ms file, aka "Windows Media Player DVR-MS Memory Corruption Vulnerability."
How severe is CVE-2011-3401?: CVE-2011-3401 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2011-3401 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-2011-3401?: CVE-2011-3401 primarily affects Microsoft Windows 7. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3401?: 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-2011-3401 published?: CVE-2011-3401 was published on 2011-12-14 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_7:-:sp1:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_7:-:sp1:x86:*:*:*:*:*
cpe:2.3:o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:-:sp2:x64:*:*:*:*:*
cpe:2.3:o:microsoft:windows_xp:2005:sp3:media_center:*:*:*:*:*

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