What’s Vulnerable › Vulnerabilities

CVE-2013-1336

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 19.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-05-15 · updated 2026-06-16
• Weakness: CWE-20

Description

The Common Language Runtime (CLR) in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not properly check signatures, which allows remote attackers to make undetected changes to signed XML documents via unspecified vectors that preserve signature validity, aka "XML Digital Signature Spoofing Vulnerability."

Affected products

• Microsoft .NET Framework: 2.0-sp2, 3.5, 3.5.1, 4.0, 4.5

References

• http://www.us-cert.gov/ncas/alerts/TA13-134A
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-040
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16559
• http://www.us-cert.gov/ncas/alerts/TA13-134A
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-040
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16559

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