Is CVE-2010-0249 in the CISA KEV catalog?

Yes. CVE-2010-0249 is on the CISA Known Exploited Vulnerabilities list, added 2026-05-20.

What is the CVSS severity of CVE-2010-0249?

CVE-2010-0249 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2010-0249?

CVE-2010-0249 has an EPSS score of 91.88% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2010-0249?

No published fix for CVE-2010-0249 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2026-06-03. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2010-0249

HIGHCISA KEVEPSS 100th pctl

8.8

CVSS v3

NVD

Description

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."

CWE-416Use After Free

How to fix

Actively exploited, no published fix found yet

Federal remediation due: 2026-06-03

Mitigation guidance may be in the linked vendor advisories in the References section below.

TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

91.88%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-06-03

References

Patch3

Exploit2

Vendor Advisory1

blogs.technet.com

Third-Party Advisory4

Government Resource1

cisa.gov

Other references4

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

Embed a live status badge for CVE-2010-0249

Markdown

[![CVE-2010-0249](https://tridentstack.com/cve/badge/CVE-2010-0249.svg)](https://tridentstack.com/cve/CVE-2010-0249)

HTML

<a href="https://tridentstack.com/cve/CVE-2010-0249"><img src="https://tridentstack.com/cve/badge/CVE-2010-0249.svg" alt="CVE-2010-0249"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-21.