CVEs / CVE-2018-8373
CVE-2018-8373: Microsoft Scripting Engine Memory Corruption Vulnerability
- Known exploited in the CISA KEV catalog since 25 Mar 2022
- high 7.5 CVSS 3.1 (NVD)
- EPSS 61.7% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer.
Description
A 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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Internet Explorer 9 | Windows Server 2008 for 32-bit Systems Service Pack 2 | — |
| Microsoft Internet Explorer 9 | Windows Server 2008 for x64-based Systems Service Pack 2 | — |
| Microsoft Internet Explorer 11 | Windows 10 for 32-bit Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 for x64-based Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1607 for 32-bit Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1607 for x64-based Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1703 for 32-bit Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1703 for x64-based Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1709 for 32-bit Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1709 for x64-based Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1803 for 32-bit Systems | — |
| Microsoft Internet Explorer 11 | Windows 10 Version 1803 for x64-based Systems | — |
| Microsoft Internet Explorer 11 | Windows 7 for 32-bit Systems Service Pack 1 | — |
| Microsoft Internet Explorer 11 | Windows 7 for x64-based Systems Service Pack 1 | — |
| Microsoft Internet Explorer 11 | Windows 8.1 for 32-bit systems | — |
| Microsoft Internet Explorer 11 | Windows 8.1 for x64-based systems | — |
| Microsoft Internet Explorer 11 | Windows RT 8.1 | — |
| Microsoft Internet Explorer 11 | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | — |
| Microsoft Internet Explorer 11 | Windows Server 2012 R2 | — |
| Microsoft Internet Explorer 11 | Windows Server 2016 | — |
| Microsoft Internet Explorer 10 | Windows Server 2012 | — |
Exploitation
| In CISA KEV since | 25 Mar 2022 |
|---|---|
| Due date for US federal agencies | 15 Apr 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.5 highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-787 |
References
- CVE-2018-8373 on NVD
- CVE-2018-8373 in the CISA KEV catalog
- http://www.securityfocus.com/bid/105037 Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041483 Broken Link, Third Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8373 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8373 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.