CVE-2012-2523
Integer overflow in Microsoft Internet Explorer 8 and 9, JScript 5.8, and VBScript 5.8 on 64-bit...
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."
Exploit likelihood
What each source reports
NVD Score used
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."
- Record
CVE-2012-2523- CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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."
- Record
CVE-2012-2523- Updated
- 2026-11-02
EUVDEUVD-2012-2509 No score
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."
- Record
EUVD-2012-2509- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3qqc-w95p-x54w No score
Integer overflow in Microsoft Internet Explorer 8 and 9, JScript 5.8, and VBScript 5.8 on 64-bit...
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."
- Record
GHSA-3qqc-w95p-x54w- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-2523 is a high vulnerability (CVSS 9.3) in Microsoft Internet Explorer, published August 15, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 22.2%, the 97th percentile. No source names a fixed version.
References
docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-052
us-cert.gov/cas/techalerts/TA12-227A.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15790
nvd.nist.gov/vuln/detail/CVE-2012-2523
github.com/advisories/GHSA-3qqc-w95p-x54w