CVE-2012-4787
9.0
CRITICAL · CVSS 3.1 · EPSS 17.6% (pctl 97)
Patch early
EPSS 17.6% — above the 10% action threshold.
Description
Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka "Improper Ref Counting Use After Free Vulnerability."
Scoring
| CVSS | 9.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 17.57% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2012-12-12 |
| Last modified | 2026-06-16 |
Affected (7)
| Vendor | Product |
|---|---|
| microsoft | internet explorer |
| microsoft | windows 7 |
| microsoft | windows 8 |
| microsoft | windows rt |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows vista |
References
- http://www.us-cert.gov/cas/techalerts/TA12-346A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-077
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16211
- http://www.us-cert.gov/cas/techalerts/TA12-346A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-077
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16211
→ the Explorer · watch your stack · NVD