In CISA KEV8.8 High
CVE-2010-0249
Microsoft Internet Explorer Use-After-Free Vulnerability
MicrosoftInternet Explorer
Status
- Exploited in the wild
- In CISA KEV since 20 May
- Vendor fix available
Federal deadlineWed 3 Jun, 23:59 UTC
Passed 143 days ago
CISA KEV · added 20 May
Exploit probabilityEPSSchecked 25 Oct
92%probability of exploitation in the next 30 days
Higher than 100% of scored CVEs
SeverityCVSS
8.8High
Description NVD
Use-after-free vulnerability in Microsoft Internet Explorer 6, 6 SP1, 7, and 8 on Windows 2000 SP4; Windows XP SP2 and SP3; Windows Server 2003 SP2; Windows Vista Gold, SP1, and SP2; Windows Server 2008 Gold, SP2, and R2; and Windows 7 allows remote attackers to execute arbitrary code by accessing a pointer associated with a deleted object, related to incorrectly initialized memory and improper handling of objects in memory, as exploited in the wild in December 2009 and January 2010 during Operation Aurora, aka "HTML Object Memory Corruption Vulnerability."
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Coverage 4 articles · 2 outlets
See the full timelineShow as table
| Published (UTC) | Outlet | Headline |
|---|---|---|
| Wed 20 May · 18:02 UTC | CISA | CISA adds seven KEV flaws, including 2026 Microsoft Defender bugs |
| Wed 20 May · 19:35 UTC | CISA | CISA flags decade old IE bug in KEV, orders patch by June 3 |
| Wed 20 May · 20:13 UTC | CISA | CISA Adds CVE-2010-0249 to KEV Catalog, Urging IE Users to Patch |
| Thu 21 May · 21:32 UTC | Security Affairs | CISA Adds Critical Flaws in Windows, Office, Defender to KEV List |
- CISA Adds Critical Flaws in Windows, Office, Defender to KEV ListSecurity Affairs · mentions it in passing
- CISA Adds CVE-2010-0249 to KEV Catalog, Urging IE Users to PatchCISA · official notice
- CISA flags decade old IE bug in KEV, orders patch by June 3CISA · official notice
- CISA adds seven KEV flaws, including 2026 Microsoft Defender bugsCISA · first in our coverage · official notice · mentions it in passing