Out-of-bounds write in Microsoft Internet Explorer 11
Priority MEDIUM 49CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Corruption Vulnerability." This affects Internet Explorer 11. This CVE ID is unique from CVE-2018-0978.
Why it matters now
EPSS 0.14916 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Internet Explorer 11 | Windows 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows RT 8.1; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2012 R2 | — | No fix listed | CNA |
- Internet Explorer 11 VendorMicrosoft Affected Windows 7 for 32-bit Systems Service Pack 1; Windows 7 for x64-based Systems Service Pack 1; Windows 8.1 for 32-bit systems; Windows 8.1 for x64-based systems; Windows RT 8.1; Windows Server 2008 R2 for x64-based Systems Service Pack 1; Windows Server 2012 R2 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:* | 11 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:*:sp1:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:* | r2 sp1 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | r2 | Running on | Microsoft |
- cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:* Versions 11 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:*:sp1:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:* Versions r2 sp1 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-8249
- 2026-10-03 Alias added: GHSA-xgg3-c4wr-66h2
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-2018-8249 · CVE Program
- CVE-2018-8249 · NVD
- FIRST EPSS
- GHSA-xgg3-c4wr-66h2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences