CVE-2020-0878CISA KEV

Microsoft Edge and Internet Explorer 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

Microsoft Edge and Internet Explorer contain a memory corruption vulnerability that allows attackers to execute code in the context of the current user.

Product: Edge and Internet Explorer
Added to KEV: 3 Nov 2021
Federal remediation due: 3 May 2022
Known ransomware use: Yes

Page history

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

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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-2020-0878. The catalog has a separate collection scope from Microsoft release records.

More advisories, affected versions and source history

cve-program · CVE-2020-0878

Published

ChakraCore

Vendor product

Publisher's version information

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

{
                    "vendor": "Microsoft",
                    "product": "ChakraCore",
                    "cpes": [
                        "cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Unknown"
                    ],
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "publication",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Microsoft Edge (EdgeHTML-based)

Vendor product

Publisher's version information

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

{
                    "vendor": "Microsoft",
                    "product": "Microsoft Edge (EdgeHTML-based)",
                    "cpes": [
                        "cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Windows 10 Version 1803 for 32-bit Systems",
                        "Windows 10 Version 1803 for x64-based Systems",
                        "Windows 10 Version 1803 for ARM64-based Systems",
                        "Windows 10 Version 1809 for 32-bit Systems",
                        "Windows 10 Version 1809 for x64-based Systems",
                        "Windows 10 Version 1809 for ARM64-based Systems",
                        "Windows Server 2019",
                        "Windows 10 Version 1909 for 32-bit Systems",
                        "Windows 10 Version 1909 for x64-based Systems",
                        "Windows 10 Version 1909 for ARM64-based Systems",
                        "Windows 10 Version 1709 for 32-bit Systems",
                        "Windows 10 Version 1709 for x64-based Systems",
                        "Windows 10 Version 1709 for ARM64-based Systems",
                        "Windows 10 Version 1903 for 32-bit Systems",
                        "Windows 10 Version 1903 for x64-based Systems",
                        "Windows 10 Version 1903 for ARM64-based Systems",
                        "Windows 10 Version 2004 for 32-bit Systems",
                        "Windows 10 Version 2004 for ARM64-based Systems",
                        "Windows 10 Version 2004 for x64-based Systems",
                        "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 Server 2016"
                    ],
                    "versions": [
                        {
                            "version": "1.0..0",
                            "lessThan": "publication",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Internet Explorer 9

Vendor product

Publisher's version information

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

{
                    "vendor": "Microsoft",
                    "product": "Internet Explorer 9",
                    "cpes": [
                        "cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Windows Server 2008 for 32-bit Systems Service Pack 2",
                        "Windows Server 2008 for x64-based Systems Service Pack 2"
                    ],
                    "versions": [
                        {
                            "version": "1.0.0",
                            "lessThan": "publication",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

Internet Explorer 11

Vendor product

Publisher's version information

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

{
                    "vendor": "Microsoft",
                    "product": "Internet Explorer 11",
                    "cpes": [
                        "cpe:2.3:a:microsoft:internet_explorer:11:-:*:*:*:*:*:*"
                    ],
                    "platforms": [
                        "Windows 10 Version 1803 for 32-bit Systems",
                        "Windows 10 Version 1803 for x64-based Systems",
                        "Windows 10 Version 1803 for ARM64-based Systems",
                        "Windows 10 Version 1809 for 32-bit Systems",
                        "Windows 10 Version 1809 for x64-based Systems",
                        "Windows 10 Version 1809 for ARM64-based Systems",
                        "Windows Server 2019",
                        "Windows 10 Version 1909 for 32-bit Systems",
                        "Windows 10 Version 1909 for x64-based Systems",
                        "Windows 10 Version 1909 for ARM64-based Systems",
                        "Windows 10 Version 1709 for 32-bit Systems",
                        "Windows 10 Version 1709 for x64-based Systems",
                        "Windows 10 Version 1709 for ARM64-based Systems",
                        "Windows 10 Version 1903 for 32-bit Systems",
                        "Windows 10 Version 1903 for x64-based Systems",
                        "Windows 10 Version 1903 for ARM64-based Systems",
                        "Windows 10 Version 2004 for 32-bit Systems",
                        "Windows 10 Version 2004 for ARM64-based Systems",
                        "Windows 10 Version 2004 for x64-based Systems",
                        "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 Server 2016",
                        "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",
                        "Windows Server 2012 R2"
                    ],
                    "versions": [
                        {
                            "version": "1.0.0",
                            "lessThan": "publication",
                            "versionType": "custom",
                            "status": "affected"
                        }
                    ]
                }

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