CVE-2012-2523
HIGH · CVSS 9.3EPSS 22.2%EU EUVD
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."
Key facts
- CVSS score
- 9.3 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-189
- EPSS score
- 22.2% (98th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-2509)
- Published
- August 15, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-2509 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / internet explorer
- microsoft / internet explorer
- microsoft / jscript
- microsoft / vbscript
References
- http://www.us-cert.gov/cas/techalerts/TA12-227A.html(Third Party Advisory, US Government Resource)
- 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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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