CVE-2010-3962
Use-after-free vulnerability in Microsoft Internet Explorer 6, 7, and 8 allows remote attackers to execute arbitrary code via vectors…
- 8.1HighCVSS base score
- 96.8%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
- YesKnown exploitedin CISA's KEV since 6 Oct 2025
- 4Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Use-after-free vulnerability in Microsoft Internet Explorer 6, 7, and 8 allows remote attackers to execute arbitrary code via vectors related to Cascading Style Sheets (CSS) token sequences and the clip attribute, aka an "invalid flag reference" issue or "Uninitialized Memory Corruption Vulnerability," as exploited in the wild in November 2010.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Internet Explorer Uninitialized Memory Corruption Vulnerability.
- Added
- 6 Oct 2025
- Fix due (US federal)
- 27 Oct 2025
- Used by ransomware
- Not known
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 6 Oct 2025.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 3 Exploit-DB entries for it. 2 references of the record are tagged as an exploit. CISA's SSVC rates its exploitation: it is being exploited.
Show the exploits6
Metasploit modules1 module
- MS10-090 Microsoft Internet Explorer CSS SetUserClip Memory Corruption (Metasploit module) (opens in a new tab)
exploit/windows/browser/ms10_090_ie_css_clipRank gooddisclosed 3 Nov 2010
Exploit-DB3 entries
- Microsoft Internet Explorer - CSS SetUserClip Memory Corruption (MS10-090) (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16551remote, windowspublished 20 Jan 2011Verified
- Microsoft Internet Explorer - Memory Corruption (Exploit-DB entry) (opens in a new tab)
EDB-ID 15418dos, windowspublished 4 Nov 2010Verified
- Microsoft Internet Explorer 6/7/8 - Memory Corruption (Exploit-DB entry) (opens in a new tab)
EDB-ID 15421remote, windowspublished 4 Nov 2010Verified
References tagged exploit2 references
- 15421 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 15418 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By microsoft
- 22 days later
· 22 days later
Published
- 15 years later
· 15 years later
Added to CISA KEV
Known exploited in the wild
- 16 days later
· 16 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 96.8% · top 0.1% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Affected products
n/a
- affected n/a
References
15
- 44536 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- TA10-348A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- MS10-090 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- VU#899748 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 42091 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2010-2880 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- http://www.microsoft.com/technet/security/advisory/2458511.mspx (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1024676 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 15421 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://www.symantec.com/connect/blogs/new-ie-0-day-used-targeted-attacks (opens in a new tab)x_refsource_MISCx_transferred
- ms-ie-flag-code-execution(62962) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://blogs.technet.com/b/msrc/archive/2010/11/02/microsoft-releases-security-advisory-2458511.aspx (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:12279 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 15418 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3962 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2010-3939 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-3962)Record last updated .