Answer in brief
CVE-2018-8373 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Microsoft/Internet Explorer 10 (generic), Microsoft/Internet Explorer 11 (generic), Microsoft/Internet Explorer 9 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Microsoft/Internet Explorer 10 (generic), Microsoft/Internet Explorer 11 (generic), Microsoft/Internet Explorer 9 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/Internet Explorer 10generic | Windows Server 2012 | Not reported |
| Microsoft/Internet Explorer 11generic | Windows 10 for 32-bit Systems || Windows 10 for x64-based Systems || Windows 10 Version 1607 for 32-bit Systems || Windows 10 Version 1607 for x64-based Systems || Windows 10 Version 1703 for 32-bit Systems || Windows 10 Version 1703 for x64-based Systems || Windows 10 Version 1709 for 32-bit Systems || Windows 10 Version 1709 for x64-based Systems || Windows 10 Version 1803 for 32-bit Systems || Windows 10 Version 1803 for x64-based Systems || 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 || Windows Server 2016 | Not reported |
| Microsoft/Internet Explorer 9generic | Windows Server 2008 for 32-bit Systems Service Pack 2 || Windows Server 2008 for x64-based Systems Service Pack 2 | Not reported |
Published upstream
Aug 15, 2018
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Mar 25, 2022
Evidence: source:kev:kev:kev:recordA remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2018-8373 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Microsoft/Internet Explorer 10 (generic), Microsoft/Internet Explorer 11 (generic), Microsoft/Internet Explorer 9 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Microsoft/Internet Explorer 10 (generic), Microsoft/Internet Explorer 11 (generic), Microsoft/Internet Explorer 9 (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Microsoft/Internet Explorer 10generic | Windows Server 2012 | Not reported |
| Microsoft/Internet Explorer 11generic | Windows 10 for 32-bit Systems || Windows 10 for x64-based Systems || Windows 10 Version 1607 for 32-bit Systems || Windows 10 Version 1607 for x64-based Systems || Windows 10 Version 1703 for 32-bit Systems || Windows 10 Version 1703 for x64-based Systems || Windows 10 Version 1709 for 32-bit Systems || Windows 10 Version 1709 for x64-based Systems || Windows 10 Version 1803 for 32-bit Systems || Windows 10 Version 1803 for x64-based Systems || 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 || Windows Server 2016 | Not reported |
| Microsoft/Internet Explorer 9generic | Windows Server 2008 for 32-bit Systems Service Pack 2 || Windows Server 2008 for x64-based Systems Service Pack 2 | Not reported |
Published upstream
Aug 15, 2018
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Mar 25, 2022
Evidence: source:kev:kev:kev:recordA remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8385, CVE-2018-8389, CVE-2018-8390.
Quoted source text, attributed separately from HOL analysis.