What’s Vulnerable › Vulnerabilities

CVE-2014-4121

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 19.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2014-10-15 · updated 2026-06-17
• Weakness: CWE-399

Description

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized resource identifiers, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted request to a .NET web application, aka ".NET Framework Remote Code Execution Vulnerability."

Affected products

• Microsoft .NET Framework: 2.0-sp2, 3.5, 3.5.1, 4.0, 4.5, 4.5.1 (+1)

References

• http://secunia.com/advisories/60969
• http://www.securityfocus.com/bid/70351
• http://www.securitytracker.com/id/1031021
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-057
• http://secunia.com/advisories/60969
• http://www.securityfocus.com/bid/70351
• http://www.securitytracker.com/id/1031021
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-057

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