What’s Vulnerable › Vulnerabilities

CVE-2013-3861

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 82.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-10-09 · updated 2026-06-16
• Weakness: CWE-20

Description

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5 SP1, 3.5.1, 4, and 4.5 allows remote attackers to cause a denial of service (application crash or hang) via crafted character sequences in JSON data, aka "JSON Parsing Vulnerability."

Affected products

• Microsoft .NET Framework: 2.0-sp2, 3.5, 3.5-sp1, 3.5.1, 4.0, 4.5

References

• http://www.us-cert.gov/ncas/alerts/TA13-288A
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-082
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18842
• http://www.us-cert.gov/ncas/alerts/TA13-288A
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-082
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18842

Get alerted when CVE-2013-3861 or the next vulnerability affects your stack