CVE-2013-3171

Name: CVE-2013-3171
Creator: NVD / NIST
Published: 2013-07-10T03:46:10.59+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 20.60%

Last modified Jun 16, 2026

CVE-2013-3171 is a vulnerability of currently unknown severity. The serialization functionality in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5 SP1, 3.5.1, 4, and 4.5 does not properly check the permissions of delegate objects, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (XBAP) or (2) a crafted .NET Framework application that leverages a partial-trust relationship, aka "Delegate Serialization Vulnerability.". EPSS estimates a 20.60% chance of exploitation in the next 30 days.

Description

The serialization functionality in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5 SP1, 3.5.1, 4, and 4.5 does not properly check the permissions of delegate objects, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (XBAP) or (2) a crafted .NET Framework application that leverages a partial-trust relationship, aka "Delegate Serialization Vulnerability."

Metrics

EPSS Probability

20.60%

97.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions	Update
Microsoft	.Net Framework	2.0	Sp2
Microsoft	.Net Framework	3.5	—
Microsoft	.Net Framework	3.5.1	—
Microsoft	.Net Framework	4.0	—
Microsoft	.Net Framework	4.5	—

References

http://www.us-cert.gov/ncas/alerts/TA13-190AThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-052
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16867
http://www.us-cert.gov/ncas/alerts/TA13-190AThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-052
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16867

Timeline

Published: Jul 10, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-3171?

How severe is CVE-2013-3171?

Severity scoring for CVE-2013-3171 is pending analysis. The EPSS model estimates a 20.60% probability of exploitation in the next 30 days.

How do I fix CVE-2013-3171?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-3171?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST