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
Published Sep 18, 2012 ·Due Jun 22, 2022
8.1
HIGHCVSS 3.1
EPSS 80.25%
Description
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.
Affected products
No data.
Configuration 1
- 6
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 2
- 7
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 3
- 8
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- r2
- r2
- n/a
- n/a
- n/a
- n/a
Configuration 4
- 9
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:C/I:C/A:C
Date Added
Jun 8, 2022
Patch Due
Jun 22, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Feb 4, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 80.25% (0.80250) | 99.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 81.72% (0.81716) | 99.60th | v5 (v2026.06.15) |
| Mar 17, 2025 | 92.61% (0.92610) | 99.75th | v4 (v2025.03.14) |
| Dec 17, 2024 | 83.49% (0.83487) | 98.68th | v3 (v2023.03.01) |
| Dec 12, 2024 | 86.43% (0.86430) | 98.70th | v3 (v2023.03.01) |
| Oct 7, 2024 | 85.89% (0.85889) | 98.61th | v3 (v2023.03.01) |
| Aug 14, 2024 | 87.84% (0.87844) | 98.72th | v3 (v2023.03.01) |
| Jun 17, 2024 | 82.12% (0.82122) | 98.41th | v3 (v2023.03.01) |
| Apr 18, 2024 | 84.02% (0.84021) | 98.43th | v3 (v2023.03.01) |
| Feb 14, 2024 | 86.88% (0.86879) | 98.50th | v3 (v2023.03.01) |
| Dec 13, 2023 | 85.70% (0.85698) | 98.25th | v3 (v2023.03.01) |
| Oct 13, 2023 | 84.75% (0.84752) | 98.12th | v3 (v2023.03.01) |
| Aug 9, 2023 | 85.59% (0.85595) | 98.09th | v3 (v2023.03.01) |
| Jun 6, 2023 | 85.53% (0.85528) | 98.03th | v3 (v2023.03.01) |
| Apr 6, 2023 | 84.07% (0.84067) | 97.89th | v3 (v2023.03.01) |
| Mar 7, 2023 | 83.56% (0.83556) | 97.83th | v3 (v2023.03.01) |
| Mar 6, 2023 | 90.51% (0.90511) | 99.86th | v2 (v2022.01.01) |
| Mar 5, 2023 | 90.51% (0.90511) | 99.86th | v2 (v2022.01.01) |
| Dec 3, 2022 | 90.81% (0.90807) | 99.86th | v2 (v2022.01.01) |
| Sep 1, 2022 | 91.09% (0.91094) | 99.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 91.54% (0.91541) | 99.87th | v2 (v2022.01.01) |
References (12)
- http://blog.vulnhunt.com/index.php/2012/09/17/ie-execcommand-fuction-use-after-free-vulnerability-0day_en/ x_refsource_MISCBroken Link
- http://dev.metasploit.com/redmine/projects/framework/repository/entry/modules/exploits/windows/browser/ie_execcommand_uaf.rb x_refsource_MISCBroken Link
- http://eromang.zataz.com/2012/09/16/zero-day-season-is-really-not-over-yet/ x_refsource_MISCThird Party Advisory
- http://technet.microsoft.com/security/advisory/2757760 x_refsource_CONFIRMPatchVendor Advisory
- http://www.kb.cert.org/vuls/id/480095 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.securitytracker.com/id?1027538 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.securityweek.com/new-internet-explorer-zero-day-being-exploited-wild x_refsource_MISCThird Party Advisory
- http://www.us-cert.gov/cas/techalerts/TA12-255A.html third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-262A.html third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- http://www.us-cert.gov/cas/techalerts/TA12-265A.html third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15729 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2012-4969 government-resourceUS Government Resource
Change history (0)
No recorded changes yet.