CVEs / CVE-2010-0806
CVE-2010-0806: Microsoft Internet Explorer Use-After-Free Vulnerability
- Known exploited in the CISA KEV catalog since 20 May 2026
- high 9.3 CVSS 2.0 (NVD)
- EPSS 82.2% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Microsoft Internet Explorer contains an use-after-free vulnerability that could allow remote attackers to execute arbitrary code via vectors involving access to an invalid pointer after the deletion of an object. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
Description
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."
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 20 May 2026 |
|---|---|
| Due date for US federal agencies | 3 Jun 2026 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 2.0 | 9.3 highAV:N/AC:M/Au:N/C:C/I:C/A:CScored by NVD |
|---|---|
| Weakness | CWE-399, CWE-416 |
References
- CVE-2010-0806 on NVD
- CVE-2010-0806 in the CISA KEV catalog
- https://learn.microsoft.com/en-us/security-updates/securityadvisories/2010/981374 (cited by CISA)
- http://blogs.technet.com/msrc/archive/2010/03/09/security-advisory-981374-released.aspx Broken Link
- http://osvdb.org/62810 Broken Link
- http://secunia.com/advisories/38860 Vendor Advisory
- http://www.kb.cert.org/vuls/id/744549 Patch, US Government Resource
- http://www.microsoft.com/technet/security/advisory/981374.mspx Broken Link, Patch, Vendor Advisory
- http://www.securityfocus.com/bid/38615 Broken Link
- http://www.us-cert.gov/cas/techalerts/TA10-068A.html US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA10-089A.html US Government Resource
- http://www.vupen.com/english/advisories/2010/0567 Vendor Advisory
- http://www.vupen.com/english/advisories/2010/0744 Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/56772 Third Party Advisory, VDB Entry
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8446 Broken Link
- https://learn.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-0806 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.