Use After Free in Microsoft Internet Explorer
CVE-2012-4787
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."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.176 (97.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.176 · newest: 0.176 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.us-cert.gov/cas/techalerts/TA12-346A.html (US Government Resource, third-party-advisory)
- docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-077 (vendor-advisory)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:16211 (signature, vdb-entry)
Frequently asked questions
- What is CVE-2012-4787?
- CVE-2012-4787 is a critical-severity vulnerability in Microsoft Internet Explorer, classified under CWE-399. CVSS score: 9.0/10. Published 2012-12-12.
- How severe is CVE-2012-4787?
- Critical severity. CVSS v3 base score is 9.0 out of 10.