// CVE

CVE-2010-0249

High 8.8 Exploited (KEV)

n/a n/a

8.8CVSS
92%EPSS
YesCISA KEV

Summary

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 all…

Published: 2010-01-15 · In KEV since: 2026-05-20

Analysis

🔴 Critical — actively exploited

How it's exploited: Exploitable over the network (internet-reachable), unauthenticated, if the victim interacts (open a file/click), and with low complexity.

Impact: Full compromise (confidentiality, integrity and availability).

Status: Active exploitation confirmed by CISA (KEV).

How to defend:
  • Patch now: it is in CISA's actively-exploited catalog (KEV), with a deadline.
  • Reduce exposure: keep it off the internet; firewall, VPN or network segmentation.
  • Awareness: the attack needs victim interaction (phishing/file).
  • Detect: turn this CVE into detection rules.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

The vector encodes how it's exploited (translated above, in the analysis). Break it down in the CVSS tool →

🔗 NVD record CISA KEV 🌉 CVE → detection 🎯 Am I exposed? ⚖️ Prioritize patch

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Sources: CISA KEV · EPSS · FIRST.org · NVD. Analysis derived from the CVSS vector and exploitation status (no AI). Informational; always verify against the vendor's official advisory.