{"schema_version":1,"title":"Microsoft Windows 11 21h2 vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 3 vulnerabilities in Microsoft Windows 11 21h2: 0 in the last 7 days and 1 in the last 90 days, 2 of them critical and 2 exploited in the wild. The most recent, CVE-2026-96943, was published on 13 October 2026. 1 vulnerability in the last four weeks, up from none in the four before.","url":"https://junglewise.ai/threats/technologies/windows-11-21h2","json_url":"https://junglewise.ai/threats/technologies/windows-11-21h2.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/windows-11-21h2","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":true,"counts":{"high":1,"all_time":3,"critical":2,"exploited":2,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":1},"latest":[{"cve":"CVE-2026-96943","cvss":8.8,"epss":0.006,"slug":"cve-2026-96943-integer-overflow-or-wraparound-in-windows-raw-image-extension","title":"Microsoft Windows Raw Image Extension integer overflow","severity":"high","exploited":false,"published_at":"2026-10-13T19:22:06.47+00:00","url":"https://junglewise.ai/threats/cve-2026-96943-integer-overflow-or-wraparound-in-windows-raw-image-extension"},{"cve":"CVE-2024-38080","cvss":7.8,"slug":"cve-2024-38080-microsoft-windows-hyper-v-privilege-escalation-vulnerability","title":"Microsoft Windows Hyper-V Privilege Escalation Vulnerability","severity":"critical","exploited":true,"published_at":"2024-07-09T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2024-38080-microsoft-windows-hyper-v-privilege-escalation-vulnerability"},{"cve":"CVE-2024-21412","cvss":8.1,"slug":"cve-2024-21412-microsoft-windows-internet-shortcut-files-security-feature-bypass","title":"Microsoft Windows Internet Shortcut Files Security Feature Bypass Vulnerability","severity":"critical","exploited":true,"published_at":"2024-02-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2024-21412-microsoft-windows-internet-shortcut-files-security-feature-bypass"}],"weekly":[{"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},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Microsoft Windows","slug":"windows","vulnerabilities":2362,"url":"https://junglewise.ai/threats/technologies/windows"},{"name":"Microsoft Windows 10","slug":"windows-10","vulnerabilities":589,"url":"https://junglewise.ai/threats/technologies/windows-10"},{"name":"Microsoft Windows 11 24h2","slug":"windows-11-24h2","vulnerabilities":565,"url":"https://junglewise.ai/threats/technologies/windows-11-24h2"},{"name":"Microsoft Windows 11 25h2","slug":"windows-11-25h2","vulnerabilities":534,"url":"https://junglewise.ai/threats/technologies/windows-11-25h2"},{"name":"Microsoft Windows Server 2025","slug":"windows-server-2025","vulnerabilities":534,"url":"https://junglewise.ai/threats/technologies/windows-server-2025"},{"name":"Microsoft Windows Server 2022","slug":"windows-server-2022","vulnerabilities":528,"url":"https://junglewise.ai/threats/technologies/windows-server-2022"},{"name":"Microsoft Windows Server 2019","slug":"windows-server-2019","vulnerabilities":521,"url":"https://junglewise.ai/threats/technologies/windows-server-2019"},{"name":"Microsoft Windows Server 2012","slug":"windows-server-2012","vulnerabilities":517,"url":"https://junglewise.ai/threats/technologies/windows-server-2012"},{"name":"Microsoft Windows 11","slug":"windows-11","vulnerabilities":494,"url":"https://junglewise.ai/threats/technologies/windows-11"},{"name":"Microsoft Windows Server 2016","slug":"windows-server-2016","vulnerabilities":476,"url":"https://junglewise.ai/threats/technologies/windows-server-2016"},{"name":"Microsoft Windows 10 1809","slug":"windows-10-1809","vulnerabilities":380,"url":"https://junglewise.ai/threats/technologies/windows-10-1809"},{"name":"Microsoft Windows 10 21h2","slug":"windows-10-21h2","vulnerabilities":373,"url":"https://junglewise.ai/threats/technologies/windows-10-21h2"}],"technology":{"hub":true,"name":"Microsoft Windows 11 21h2","slug":"windows-11-21h2","vendor":{"hub":true,"name":"Microsoft","slug":"microsoft","url":"https://junglewise.ai/threats/vendors/microsoft"},"aliases":[],"homepage":"https://www.microsoft.com/windows/windows-11","description":"Windows 11 operating system version 21H2.","url":"https://junglewise.ai/threats/technologies/windows-11-21h2"},"most_severe":[{"cve":"CVE-2024-21412","cvss":8.1,"slug":"cve-2024-21412-microsoft-windows-internet-shortcut-files-security-feature-bypass","title":"Microsoft Windows Internet Shortcut Files Security Feature Bypass Vulnerability","severity":"critical","exploited":true,"published_at":"2024-02-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2024-21412-microsoft-windows-internet-shortcut-files-security-feature-bypass"},{"cve":"CVE-2024-38080","cvss":7.8,"slug":"cve-2024-38080-microsoft-windows-hyper-v-privilege-escalation-vulnerability","title":"Microsoft Windows Hyper-V Privilege Escalation Vulnerability","severity":"critical","exploited":true,"published_at":"2024-07-09T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2024-38080-microsoft-windows-hyper-v-privilege-escalation-vulnerability"},{"cve":"CVE-2026-96943","cvss":8.8,"epss":0.006,"slug":"cve-2026-96943-integer-overflow-or-wraparound-in-windows-raw-image-extension","title":"Microsoft Windows Raw Image Extension integer overflow","severity":"high","exploited":false,"published_at":"2026-10-13T19:22:06.47+00:00","url":"https://junglewise.ai/threats/cve-2026-96943-integer-overflow-or-wraparound-in-windows-raw-image-extension"}],"generated_at":"2026-11-13T03:07:00.155039+00:00"}