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CVE-2012-2523

CRITICAL

9.3

CVSS Severity Score

EPSS Score0.0470%

EPSS Percentile7.84th

PublishedAug 15, 2012

Last ModifiedApr 29, 2026

Vulnerability Description

Integer overflow in Microsoft Internet Explorer 8 and 9, JScript 5.8, and VBScript 5.8 on 64-bit platforms allows remote attackers to execute arbitrary code by leveraging an incorrect size calculation during object copying, aka "JavaScript Integer Overflow Remote Code Execution Vulnerability."

Affected Platforms (CPE)

📦

Microsoft

Internet Explorer

= 8

📦

Microsoft

Internet Explorer

= 9

📦

Microsoft

Jscript

= 5.8

📦

Microsoft

Vbscript

= 5.8

References & Advisories

🔗 http://www.us-cert.gov/cas/techalerts/TA12-227A.html

🔗 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-052

🔗 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-056

🔗 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15790

🔗 http://www.us-cert.gov/cas/techalerts/TA12-227A.html

🔗 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-052

🔗 https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-056

🔗 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15790

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