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Vulnerability record · CVE-2014-4121 · published 15 October 2014

CVE-2014-4121: Microsoft .net framework vulnerability

Microsoft · .Net Framework

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."

10.0 CVSS 2.0 High EPSS 19% · top 2.8% CWE-399 · CWE-399
10.0CVSS 2.0 base score
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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."

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2014-4121), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.