CVE-2012-4969 kev in the critical feed json
Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft Internet Explorer 6 through 9 allows remote attacke…
published 2012-09-18 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4893
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-06-08
- epss
- 80.3%
- EPSS 80.3% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 2
- Metasploit, Exploit-DB
Summary
Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft Internet Explorer 6 through 9 allows remote attackers to execute arbitrary code via a crafted web site, as exploited in the wild in September 2012.
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- First public exploit (Metasploit exploit/windows/browser/ie_execcommand_uaf)
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-06-22 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Internet Explorer
- CISA name
- Microsoft Internet Explorer Use-After-Free Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
80.25% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/windows/browser/ie_execcommand_uaf MS12-063 Microsoft Internet Explorer execCommand Use-After-Free Vulnerability metasploit exploit, good rank, 2012-09-14
- EDB-21840 Microsoft Internet Explorer - execCommand Use-After-Free (MS12-063) (Metasploit) remote, 2012-10-10
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
technet.microsoft.com
/security/advisory/2757760
patch, vendor-advisory
-
us-cert.gov
/cas/techalerts/TA12-265A.html
third-party-advisory, us-government-resource
-
kb.cert.org
/vuls/id/480095
third-party-advisory, us-government-resource
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729
vdb-entry, signature, third-party-advisory
-
us-cert.gov
/cas/techalerts/TA12-262A.html
third-party-advisory, us-government-resource
-
securityweek.com
/new-internet-explorer-zero-day-being-exploited-wild
third-party-advisory
-
us-cert.gov
/cas/techalerts/TA12-255A.html
third-party-advisory, us-government-resource
-
blog.vulnhunt.com
/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/
broken-link
-
dev.metasploit.com
/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb
broken-link
-
securitytracker.com
/id?1027538
vdb-entry, third-party-advisory
-
eromang.zataz.com
/2012/09/16/zero-day-season-is-really-not-over-yet/
third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969
government-resource, us-government-resource
Sources
- CVE List CVE-2012-4969
- NVD CVE-2012-4969
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.