Use-after-free vulnerability in the CMshtmlEd::Exec function in mshtml.dll in Microsoft…
Priority CRITICAL 94Exploited in the wildCWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
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.
Why it matters now
Exploitation Active In CISA KEV since 2022-06-08CISA due date 2022-06-22
EPSS 0.8025 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 24
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:* | 6 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:itanium:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:* | 7 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:itanium:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:* Versions 6 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:itanium:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:professional:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:* Versions 7 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:itanium:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
Show 14 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:* | 8 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:-:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:itanium:* | r2 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:x64:* | r2 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* | r2 sp1 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* | r2 sp1 | Running on | Microsoft |
| cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:* | 9 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:-:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:x64:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:-:sp2:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:* Versions 8 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:-:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:itanium:* Versions r2 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:x64:* Versions r2 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* Versions r2 sp1 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Running on ·Microsoft
- cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:-:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_7:*:*:*:*:*:*:x64:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* Versions not specified by NVD Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2022-06-08 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2012-4969
- 2026-10-03 Alias added: GHSA-xvh2-pw6x-f8hh
References
Advisory 7
More Microsoft Internet Explorer vulnerabilities
- TI-2015-00277 Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-00275 Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-01386 Use-after-free vulnerability in Microsoft Internet Explorer 6 through 11 allows remote… KEVCVSS 3.1CRITICAL 9.8
- TI-2020-01340 Scripting Engine Memory Corruption Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2019-00335 Command injection in Microsoft Office KEVCVSS 3.1HIGH 8.8
- TI-2017-00204 Out-of-bounds write in Microsoft Internet Explorer KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2012-4969 · CVE Program
- CVE-2012-4969 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-xvh2-pw6x-f8hh · GitHub Advisory Database · CC BY 4.0
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