Is CVE-2013-3154 being actively exploited?

CVE-2013-3154 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-3154?

CVE-2013-3154 has a CVSS 2.0 base score of 6.9 (MEDIUM).

CVE-2013-3154

MEDIUM · CVSS 6.9EPSS 1.8%EU EUVD

The signature-update functionality in Windows Defender on Microsoft Windows 7 and Windows Server 2008 R2 relies on an incorrect pathname, which allows local users to gain privileges via a Trojan horse application in the %SYSTEMDRIVE% top-level directory, aka "Microsoft Windows 7 Defender Improper Pathname Vulnerability."

Key facts

CVSS score: 6.9 (v2.0)
Severity: MEDIUM
CVSS vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-264
EPSS score: 1.8% (78th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-3092)
Published: July 10, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-3092 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

microsoft / windows 7
microsoft / windows defender
microsoft / windows server 2008

References

http://blogs.technet.com/b/srd/archive/2013/07/09/assessing-risk-for-the-july-2013-security-updates.aspx(Vendor Advisory)
http://www.us-cert.gov/ncas/alerts/TA13-190A(Third Party Advisory, US Government Resource)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-058
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17253

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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