Microsoft Internet Explorer Use-After-Free Vulnerability
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.
- Vendor
- Microsoft
- Product
- Internet Explorer
- CVSS
- 8.8
- EPSS (exploit probability)
- 91.9%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2010-0249 being exploited?
Yes. CISA added CVE-2010-0249 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 91.9% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2010-0249 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies must remediate by (14 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Microsoft Internet Explorer CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2010-0806 Microsoft Internet Explorer Use-After-Free Vulnerability | [ HIGH ] | 8.8 | 82.1% | |
| CVE-2010-3962 Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability | [ HIGH ] | 8.1 | 96.8% | |
| CVE-2013-3893 Microsoft Internet Explorer Resource Management Errors Vulnerability | [ HIGH ] | 8.8 | 87.6% | |
| CVE-2012-4792 Microsoft Internet Explorer Use-After-Free Vulnerability | [ HIGH ] | 8.8 | 78.8% | |
| CVE-2013-3163 Microsoft Internet Explorer Memory Corruption Vulnerability | [ HIGH ] | 8.8 | 70.7% | |
| CVE-2012-4969 Microsoft Internet Explorer Use-After-Free Vulnerability | [ HIGH ] | 8.1 | 80.3% | |
| CVE-2015-2425 Microsoft Internet Explorer Memory Corruption Vulnerability | [ HIGH ] | 8.8 | 44.7% | |
| CVE-2015-0071 Microsoft Internet Explorer ASLR Bypass Vulnerability | [ MEDIUM ] | 6.5 | 33.6% |