CVE-2012-4792: in the CISA KEV catalogue
Microsoft Internet Explorer Use-After-Free Vulnerability. CISA added CVE-2012-4792 to the Known Exploited Vulnerabilities catalogue on 2024-07-23 with a default due date of 2024-08-13. Known ransomware campaign use: Unknown. Forensic triage flag: No.
Microsoft Internet Explorer contains a use-after-free vulnerability that allows a remote attacker to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly allocated or (2) is deleted, as demonstrated by a CDwnBindInfo object. (CISA description)
- Vendor / product
- Microsoft Internet Explorer
- CWE
- CWE-416
- CISA required action
- The impacted product is end-of-life and should be disconnected if still in use.
- EPSS
- 79%, percentile 99 (scored 2026-11-04)
EPSS puts about 79 in 100 odds (79%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2012-4792 in the CISA KEV catalogue?
Yes. CISA added CVE-2012-4792 (Microsoft Internet Explorer Use-After-Free Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2024-07-23. CISA's default due date for it is 2024-08-13.
Is CVE-2012-4792 used in ransomware attacks?
CISA marks known ransomware campaign use as Unknown for CVE-2012-4792. That means CISA lacks confirmation, not that ransomware groups do not use it.
What should I do about CVE-2012-4792?
CISA's required action: The impacted product is end-of-life and should be disconnected if still in use.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2012-4792