HOMEVULNERABILITIESCVE-2010-3962
HIGHCISA KEVIN THE WILD

CVE-2010-3962

Published: October 6, 2025

EPSS:87.03%probability of exploitation in 30 daysPercentile:99.4th

Official Description

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.

NVD Source

CISA KEV Advisory

Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability

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.

Added to KEV: 2025-10-06Federal patch deadline: 2025-10-27
Required Action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Risk Analysis

Microsoft Internet Explorer contains an uninitialized memory corruption vulnerability that could allow for remote code execution. The very high EPSS score of 0.87030 indicates a strong likelihood of exploitation, and its inclusion in CISA's KEV confirms active exploitation, making this a critical vulnerability. Users should discontinue use of this end-of-life product.

This vulnerability is actively being exploited in the wild. The memory corruption flaw allows for remote code execution, making it remotely exploitable.

Recommended Action

Users should immediately discontinue the use of Microsoft Internet Explorer as it is an end-of-life product. Migrate to a supported and secure web browser.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2010-3962 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2010-3962 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Affected Vendors & Products

Mentioned vendors (from description):
Microsoft
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

Quick Facts

CVE IDCVE-2010-3962
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)87.03%
PublishedOct 6, 2025

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2010-3962 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.