{"schema_version":1,"title":"Microsoft MSHTML vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Microsoft MSHTML: 0 in the last 7 days and 0 in the last 90 days, 3 of them critical and 3 exploited in the wild. The most recent, CVE-2026-21513, was published on 10 February 2026.","url":"https://junglewise.ai/threats/technologies/mshtml","json_url":"https://junglewise.ai/threats/technologies/mshtml.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/mshtml","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":3,"critical":3,"exploited":3,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":1},"latest":[{"cve":"CVE-2026-21513","cvss":8.8,"epss":0.3103,"slug":"cve-2026-21513-microsoft-mshtml-framework-protection-mechanism-failure","title":"Microsoft MSHTML Framework protection mechanism failure","severity":"critical","exploited":true,"published_at":"2026-02-10T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2026-21513-microsoft-mshtml-framework-protection-mechanism-failure"},{"cve":"CVE-2021-40444","cvss":8.8,"slug":"cve-2021-40444-microsoft-mshtml-remote-code-execution-vulnerability","title":"Microsoft MSHTML Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2021-11-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2021-40444-microsoft-mshtml-remote-code-execution-vulnerability"},{"cve":"CVE-2019-0541","cvss":8.8,"slug":"cve-2019-0541-microsoft-mshtml-remote-code-execution-vulnerability","title":"Microsoft MSHTML Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2021-11-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2019-0541-microsoft-mshtml-remote-code-execution-vulnerability"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Microsoft Windows","slug":"windows-","vulnerabilities":963,"url":"https://junglewise.ai/threats/technologies/windows-"},{"name":"Microsoft Windows 10","slug":"windows-10","vulnerabilities":588,"url":"https://junglewise.ai/threats/technologies/windows-10"},{"name":"Microsoft Windows 11","slug":"windows-11","vulnerabilities":493,"url":"https://junglewise.ai/threats/technologies/windows-11"},{"name":"Microsoft Windows Server 2012","slug":"windows-server-2012","vulnerabilities":293,"url":"https://junglewise.ai/threats/technologies/windows-server-2012"},{"name":"Microsoft Windows Server 2016","slug":"windows-server-2016","vulnerabilities":213,"url":"https://junglewise.ai/threats/technologies/windows-server-2016"},{"name":"Microsoft Windows Server 2019","slug":"windows-server-2019","vulnerabilities":211,"url":"https://junglewise.ai/threats/technologies/windows-server-2019"},{"name":"Microsoft Windows 11 24h2","slug":"windows-11-24h2","vulnerabilities":192,"url":"https://junglewise.ai/threats/technologies/windows-11-24h2"},{"name":"Microsoft Windows Server 2022","slug":"windows-server-2022","vulnerabilities":178,"url":"https://junglewise.ai/threats/technologies/windows-server-2022"},{"name":"Microsoft Edge","slug":"edge-chromium-based","vulnerabilities":167,"url":"https://junglewise.ai/threats/technologies/edge-chromium-based"},{"name":"Microsoft Windows 11 25h2","slug":"windows-11-25h2","vulnerabilities":161,"url":"https://junglewise.ai/threats/technologies/windows-11-25h2"},{"name":"Microsoft Windows 11 Version 26H1","slug":"windows-11-version-26h1","vulnerabilities":135,"url":"https://junglewise.ai/threats/technologies/windows-11-version-26h1"},{"name":"Microsoft Windows Server 2025","slug":"windows-server-2025","vulnerabilities":124,"url":"https://junglewise.ai/threats/technologies/windows-server-2025"}],"technology":{"hub":true,"name":"Microsoft MSHTML","slug":"mshtml","vendor":{"name":"Microsoft","slug":"microsoft","url":"https://junglewise.ai/threats/vendors/microsoft"},"aliases":["mshtml-framework"],"category":"library","homepage":"https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/aa753614(v=vs.85)","description":"A software component used by Internet Explorer and other applications to render web pages on Windows.","url":"https://junglewise.ai/threats/technologies/mshtml"},"most_severe":[{"cve":"CVE-2026-21513","cvss":8.8,"epss":0.3103,"slug":"cve-2026-21513-microsoft-mshtml-framework-protection-mechanism-failure","title":"Microsoft MSHTML Framework protection mechanism failure","severity":"critical","exploited":true,"published_at":"2026-02-10T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2026-21513-microsoft-mshtml-framework-protection-mechanism-failure"},{"cve":"CVE-2021-40444","cvss":8.8,"slug":"cve-2021-40444-microsoft-mshtml-remote-code-execution-vulnerability","title":"Microsoft MSHTML Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2021-11-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2021-40444-microsoft-mshtml-remote-code-execution-vulnerability"},{"cve":"CVE-2019-0541","cvss":8.8,"slug":"cve-2019-0541-microsoft-mshtml-remote-code-execution-vulnerability","title":"Microsoft MSHTML Remote Code Execution Vulnerability","severity":"critical","exploited":true,"published_at":"2021-11-03T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2019-0541-microsoft-mshtml-remote-code-execution-vulnerability"}],"generated_at":"2026-09-26T09:24:00.138874+00:00"}