AEGLIX vulnerability intelligence
CVE-2012-4969
HIGH · CVSS 8.1 · Analyzed
Published: 2012-09-18 · Updated: 2026-06-16 · Source: NVD
Stored catalog record
Source record retrieved 2026-10-28T12:26:01.874270+00:00. Scheduled imports handle updates; this page does not assert that the provider was queried just now.
Vulnerability overview
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 review priority
Known exploitation: prioritize review
- CISA KEV lists real-world exploitation.
FIRST EPSS: 80.25% · percentile 99.6 · score date 2026-10-27.
EPSS estimates probability of exploitation in the next 30 days. It does not measure your exposure or prove exploitation. The elevated threshold is 10%; CISA KEV takes precedence. About FIRST EPSS ↗
Severity and scoring
- CVSS score
- 8.1 · HIGH
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Microsoft · Internet Explorer
- Added to catalog
- 2022-06-08
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-06-22
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/
Broken Link
- http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb
Broken Link
- http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/
Third Party Advisory
- http://technet.microsoft.com/security/advisory/2757760
Patch · Vendor Advisory
- http://www.kb.cert.org/vuls/id/480095
Third Party Advisory · US Government Resource
- http://www.securitytracker.com/id?1027538
Third Party Advisory · VDB Entry
- http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild
Third Party Advisory
- http://www.us-cert.gov/cas/techalerts/TA12-255A.html
Third Party Advisory · US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-262A.html
Third Party Advisory · US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-265A.html
Third Party Advisory · US Government Resource
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729
Third Party Advisory
- http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/
Broken Link
- http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb
Broken Link
- http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/
Third Party Advisory
- http://technet.microsoft.com/security/advisory/2757760
Patch · Vendor Advisory
- http://www.kb.cert.org/vuls/id/480095
Third Party Advisory · US Government Resource
- http://www.securitytracker.com/id?1027538
Third Party Advisory · VDB Entry
- http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild
Third Party Advisory
- http://www.us-cert.gov/cas/techalerts/TA12-255A.html
Third Party Advisory · US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-262A.html
Third Party Advisory · US Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-265A.html
Third Party Advisory · US Government Resource
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729
Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969
US Government Resource