Is CVE-2013-0013 being actively exploited?

CVE-2013-0013 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-0013?

CVE-2013-0013 has a CVSS 2.0 base score of 5.8 (MEDIUM).

CVE-2013-0013

MEDIUM · CVSS 5.8EPSS 6.4%EU EUVD

The SSL provider component in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, Windows 8, Windows Server 2012, and Windows RT does not properly handle encrypted packets, which allows man-in-the-middle attackers to conduct SSLv2 downgrade attacks against (1) SSLv3 sessions or (2) TLS sessions by intercepting handshakes and injecting content, aka "Microsoft SSL Version 3 and TLS Protocol Security Feature Bypass Vulnerability."

Key facts

CVSS score: 5.8 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness (CWE): CWE-264
EPSS score: 6.4% (94th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-0056)
Published: January 9, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-0056 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 7
microsoft / windows 7
microsoft / windows 7
microsoft / windows 8
microsoft / windows 8
microsoft / windows rt
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2012
microsoft / windows vista

Certified products that may be affected

7 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Windows Vista Enhanced Cryptographic Provider (RSAENH) - Microsoft Corporation - FIPS 140 1002 - historical
Windows Vista Enhanced DSS and Diffie-Hellman Cryptographic Provider (DSSENH) - Microsoft Corporation - FIPS 140 1003 - historical
Windows Vista Boot Manager (bootmgr) - Microsoft Corporation - FIPS 140 978 - historical
Windows Vista Winload OS Loader (winload.exe) - Microsoft Corporation - FIPS 140 979 - historical
Windows Vista Code Integrity (ci.dll) - Microsoft Corporation - FIPS 140 980 - historical

See all 7 in the Security Certifications Explorer.

References

http://www.us-cert.gov/cas/techalerts/TA13-008A.html(Third Party Advisory, US Government Resource)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-006
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16273

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

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