CVE-2010-0249
Use-After-Free in Microsoft Internet Explorer. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 20 May 2026.
- Product
- Microsoft Internet Explorer
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Sources
- CISA’s catalog, NVD entry
CISA’s description.
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
More from Microsoft this year.
- CVE-2026-96951 Command Injection, added
- CVE-2026-65660 Code Injection, added
- CVE-2026-85880 Heap-Based Buffer Overflow, added
- CVE-2026-81963 Link Following, added
- CVE-2019-1068 Remote Code Execution, added
- CVE-2026-55040 Weak Authentication, added
- CVE-2026-33824 Double Free, added
- CVE-2026-68820 Use-After-Free, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.