CVE-2010-0806 — Microsoft Internet Explorer

What is CVE-2010-0806?

Use-after-free vulnerability in the Peer Objects component (aka iepeers.dll) in Microsoft Internet Explorer 6, 6 SP1, and 7 allows remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object, as exploited in the wild in March 2010, aka "Uninitialized Memory Corruption Vulnerability."

The record classifies CVE-2010-0806 under weakness classes CWE-399, CWE-416. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 7 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 6076 days ago.

Severity and exploitation probability

CVSS v3.1 base score: 8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (FIRST): 82.2% probability of exploitation in the next 30 days, higher than 99.6% of all scored CVEs
CISA KEV: Listed since 2026-05-20, federal remediation deadline 2026-06-03 — used in known ransomware campaigns
Threadlinqs priority: 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
Published: 2010-03-10, last modified 2026-05-21

Is CVE-2010-0806 being exploited?

CISA added CVE-2010-0806 to the Known Exploited Vulnerabilities catalog on 2026-05-20, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2026-06-03 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2010-0806 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 48 in the Threadlinqs vulnerability feed.

trickest/cve (trickest)

Affected products and versions

Microsoft: Internet Explorer, Windows 2000, Windows 7, Windows Server 2003, Windows Server 2008, Windows Vista, Windows Xp

How to fix CVE-2010-0806

The record marks a vendor fix as available for CVE-2010-0806. Patch reference: http://www.microsoft.com/technet/security/advisory/981374.mspx. Vendor advisory: http://secunia.com/advisories/38860. Because CVE-2010-0806 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2026-06-03. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.

Threat activity tracking CVE-2010-0806

1 tracked threat in the Threadlinqs corpus references CVE-2010-0806, either in the campaign’s CVE list or as an indicator on the campaign record.

CISA KEV Catalog Adds Seven Vulnerabilities (May 20, 2026) — Microsoft Defender CVE-2026-41091 (EoP) and CVE-2026-45498 (DoS) Headline Active Exploitation Batch — HIGH · 2026-05-21

Sources

Enriched from CVE.org, FIRST EPSS, CISA KEV, public proof-of-concept repositories. Last verified by Threadlinqs on 2026-10-10.