Microsoft · Internet Explorer
CVE-2010-0806
Microsoft Internet Explorer Use-After-Free Vulnerability
What it is
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."
CISA: 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.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: June 3, 2026
- Added to the CISA list
- May 20, 2026
- Published
- March 10, 2010
- Severity
- High 8.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 82% in the top 0.3% of all known vulnerabilities
- Weakness
- CWE-399
- More details
- NVD · CVE.org · CISA
All references (13)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018
- http://osvdb.org/62810
- http://www.us-cert.gov/cas/techalerts/TA10-089A.html
- http://www.securityfocus.com/bid/38615
- http://www.vupen.com/english/advisories/2010/0567
- http://secunia.com/advisories/38860
- http://www.us-cert.gov/cas/techalerts/TA10-068A.html
- http://www.microsoft.com/technet/security/advisory/981374.mspx
- https://exchange.xforce.ibmcloud.com/vulnerabilities/56772
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8446
- http://www.vupen.com/english/advisories/2010/0744
- http://blogs.technet.com/msrc/archive/2010/03/09/security-advisory-981374-released.aspx
- http://www.kb.cert.org/vuls/id/744549
More exploited flaws from Microsoft
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| May 20, 2026 | Use-After-Free | Internet Explorer | High 8.8 | 92% |
| Oct 6, 2025 | Uninitialized Memory Corruption | Internet Explorer | High 8.1 | 97% |
| Aug 12, 2025 | Resource Management Errors | Internet Explorer | High 8.8 | 88% |
| Jul 23, 2024 | Use-After-Free | Internet Explorer | High 8.8 | 79% |
| Mar 30, 2023 | Memory Corruption | Internet Explorer | High 8.8 | 71% |
| Jun 8, 2022 | Use-After-Free | Internet Explorer | High 8.1 | 80% |
| May 25, 2022 | Information Disclosure | Internet Explorer | Medium 6.5 | 50% |
| May 25, 2022 | Privilege Escalation | Internet Explorer | High 8.8 | 26% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.