Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability (CVE-2010-3962)
Severity: high · Patch status: patched · Since 2025-10-06 · CVE-2010-3962
Microsoft Internet Explorer contains an uninitialized memory corruption vulnerability that could allow for remote code execution. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. CISA added CVE-2010-3962 to its Known Exploited Vulnerabilities catalog on Oct 6, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply 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 agencies must remediate by Oct 27, 2025 (BOD 22-01); treat that as the outer limit.
Sources
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