CVE-2018-8373CISA KEV

Microsoft Scripting Engine Memory Corruption Vulnerability

Severity unknownCVSS unknownCheck the vendor advisory for fixed versions

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer.

Product: Internet Explorer Scripting Engine
Added to KEV: 25 Mar 2022
Federal remediation due: 15 Apr 2022
Known ransomware use: Not reported

Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version

Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

Explore global source statements, affected packages and advisory history for CVE-2018-8373. The catalog has a separate collection scope from Microsoft release records.

More advisories, affected versions and source history

cve-program · CVE-2018-8373

Published

Internet Explorer 9

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Internet Explorer 9",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "Windows Server 2008 for 32-bit Systems Service Pack 2"
                        },
                        {
                            "status": "affected",
                            "version": "Windows Server 2008 for x64-based Systems Service Pack 2"
                        }
                    ]
                }

Internet Explorer 11

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Internet Explorer 11",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "Windows 10 for 32-bit Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 for x64-based Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1607 for 32-bit Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1607 for x64-based Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1703 for 32-bit Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1703 for x64-based Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1709 for 32-bit Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1709 for x64-based Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1803 for 32-bit Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 10 Version 1803 for x64-based Systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 7 for 32-bit Systems Service Pack 1"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 7 for x64-based Systems Service Pack 1"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 8.1 for 32-bit systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows 8.1 for x64-based systems"
                        },
                        {
                            "status": "affected",
                            "version": "Windows RT 8.1"
                        },
                        {
                            "status": "affected",
                            "version": "Windows Server 2008 R2 for x64-based Systems Service Pack 1"
                        },
                        {
                            "status": "affected",
                            "version": "Windows Server 2012 R2"
                        },
                        {
                            "status": "affected",
                            "version": "Windows Server 2016"
                        }
                    ]
                }

Internet Explorer 10

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Internet Explorer 10",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "Windows Server 2012"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON