{"schema_version":1,"title":"Microsoft Windows Server vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 16 vulnerabilities in Microsoft Windows Server: 0 in the last 7 days and 5 in the last 90 days, 3 of them critical and 2 exploited in the wild. The most recent, CVE-2026-77499, was published on 8 September 2026.","url":"https://junglewise.ai/threats/technologies/windows-server","json_url":"https://junglewise.ai/threats/technologies/windows-server.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-server","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":11,"all_time":16,"critical":3,"exploited":2,"last_7_days":0,"last_30_days":4,"last_90_days":5,"last_365_days":15},"latest":[{"cve":"CVE-2026-77499","cvss":7.5,"epss":0.0117,"slug":"cve-2026-77499-microsoft-windows-dhcp-server-type-confusion-denial-of-service","title":"Microsoft Windows DHCP Server type confusion denial of service","severity":"high","exploited":false,"published_at":"2026-09-08T18:20:36.437+00:00","url":"https://junglewise.ai/threats/cve-2026-77499-microsoft-windows-dhcp-server-type-confusion-denial-of-service"},{"cve":"CVE-2026-69821","cvss":7.8,"epss":0.0033,"slug":"cve-2026-69821-microsoft-active-directory-certificate-services-privilege","title":"Microsoft Active Directory Certificate Services privilege escalation","severity":"high","exploited":false,"published_at":"2026-09-08T18:19:53.883+00:00","url":"https://junglewise.ai/threats/cve-2026-69821-microsoft-active-directory-certificate-services-privilege"},{"cve":"CVE-2026-62810","cvss":7.8,"epss":0.0034,"slug":"cve-2026-62810-microsoft-active-directory-certificate-services-heap-overflow","title":"Microsoft Active Directory Certificate Services heap overflow","severity":"high","exploited":false,"published_at":"2026-09-08T18:18:03.337+00:00","url":"https://junglewise.ai/threats/cve-2026-62810-microsoft-active-directory-certificate-services-heap-overflow"},{"cve":"CVE-2026-56177","cvss":7.8,"epss":0.0033,"slug":"cve-2026-56177-microsoft-windows-server-use-after-free-privilege-escalation","title":"Microsoft Windows Server use-after-free privilege escalation","severity":"high","exploited":false,"published_at":"2026-09-08T18:17:42.563+00:00","url":"https://junglewise.ai/threats/cve-2026-56177-microsoft-windows-server-use-after-free-privilege-escalation"},{"cve":"CVE-2026-50362","cvss":7.8,"slug":"cve-2026-50362-microsoft-windows-refs-heap-overflow","title":"Microsoft Windows ReFS heap overflow","severity":"high","exploited":false,"published_at":"2026-07-14T18:17:36.58+00:00","url":"https://junglewise.ai/threats/cve-2026-50362-microsoft-windows-refs-heap-overflow"},{"cve":"CVE-2026-41089","cvss":9.8,"slug":"cve-2026-41089-microsoft-windows-stack-based-buffer-overflow-in-netlogon","title":"Microsoft Windows stack-based buffer overflow in Netlogon","severity":"critical","exploited":false,"published_at":"2026-05-12T18:17:20.72+00:00","url":"https://junglewise.ai/threats/cve-2026-41089-microsoft-windows-stack-based-buffer-overflow-in-netlogon"},{"cve":"CVE-2026-40414","cvss":7.4,"epss":0.0012,"slug":"cve-2026-40414-microsoft-windows-tcp-ip-null-pointer-dereference-denial-of","title":"Microsoft Windows TCP/IP null pointer dereference denial of service","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:19.35+00:00","url":"https://junglewise.ai/threats/cve-2026-40414-microsoft-windows-tcp-ip-null-pointer-dereference-denial-of"},{"cve":"CVE-2026-40413","cvss":7.4,"epss":0.0012,"slug":"cve-2026-40413-microsoft-windows-tcp-ip-null-pointer-dereference-denial-of","title":"Microsoft Windows TCP/IP null pointer dereference denial of service","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:19.167+00:00","url":"https://junglewise.ai/threats/cve-2026-40413-microsoft-windows-tcp-ip-null-pointer-dereference-denial-of"},{"cve":"CVE-2026-40401","cvss":7.1,"epss":0.0005,"slug":"cve-2026-40401-microsoft-windows-tcp-ip-denial-of-service-via-null-pointer","title":"Microsoft Windows TCP/IP denial of service via null pointer dereference","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:17.82+00:00","url":"https://junglewise.ai/threats/cve-2026-40401-microsoft-windows-tcp-ip-denial-of-service-via-null-pointer"},{"cve":"CVE-2026-34351","cvss":7.8,"slug":"cve-2026-34351-microsoft-windows-tcp-ip-race-condition-privilege-escalation","title":"Microsoft Windows TCP/IP race condition privilege escalation","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:09.66+00:00","url":"https://junglewise.ai/threats/cve-2026-34351-microsoft-windows-tcp-ip-race-condition-privilege-escalation"},{"cve":"CVE-2026-34330","cvss":7.8,"epss":0.0007,"slug":"cve-2026-34330-microsoft-windows-win32k-race-condition-in-grfx-component","title":"Microsoft Windows Win32K race condition in GRFX component","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:06.757+00:00","url":"https://junglewise.ai/threats/cve-2026-34330-microsoft-windows-win32k-race-condition-in-grfx-component"},{"cve":"CVE-2026-25180","cvss":5.5,"epss":0.0004,"slug":"cve-2026-25180-microsoft-graphics-component-out-of-bounds-read","title":"Microsoft Graphics Component out-of-bounds read","severity":"medium","exploited":false,"published_at":"2026-03-10T18:18:34.097+00:00","url":"https://junglewise.ai/threats/cve-2026-25180-microsoft-graphics-component-out-of-bounds-read"},{"cve":"CVE-2026-24285","cvss":7,"epss":0.0004,"slug":"cve-2026-24285-microsoft-windows-win32k-use-after-free-privilege-escalation","title":"Microsoft Windows Win32K use after free privilege escalation","severity":"high","exploited":false,"published_at":"2026-03-10T18:18:18.37+00:00","url":"https://junglewise.ai/threats/cve-2026-24285-microsoft-windows-win32k-use-after-free-privilege-escalation"},{"cve":"CVE-2026-21519","cvss":7.8,"epss":0.0452,"slug":"cve-2026-21519-microsoft-windows-type-confusion-in-desktop-window-manager","title":"Microsoft Windows type confusion in Desktop Window Manager","severity":"critical","exploited":true,"published_at":"2026-02-10T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2026-21519-microsoft-windows-type-confusion-in-desktop-window-manager"},{"cve":"CVE-2025-62221","cvss":7.8,"epss":0.0251,"slug":"cve-2025-62221-microsoft-windows-use-after-free-in-cloud-files-mini-filter","title":"Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.","severity":"critical","exploited":true,"published_at":"2025-12-09T18:15:56.517+00:00","url":"https://junglewise.ai/threats/cve-2025-62221-microsoft-windows-use-after-free-in-cloud-files-mini-filter"},{"cve":"CVE-2025-53799","cvss":5.5,"epss":0.0012,"slug":"cve-2025-53799-microsoft-windows-imaging-component-information-disclosure","title":"Microsoft Windows Imaging Component information disclosure","severity":"medium","exploited":false,"published_at":"2025-09-09T17:15:50.01+00:00","url":"https://junglewise.ai/threats/cve-2025-53799-microsoft-windows-imaging-component-information-disclosure"}],"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":1},{"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":4},{"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 Windows Server","slug":"windows-server","vendor":{"name":"Microsoft","slug":"microsoft","url":"https://junglewise.ai/threats/vendors/microsoft"},"aliases":[],"category":"os","homepage":"https://www.microsoft.com/windows-server","description":"A server operating system developed by Microsoft for enterprise-level management, data storage, and application hosting.","url":"https://junglewise.ai/threats/technologies/windows-server"},"most_severe":[{"cve":"CVE-2026-21519","cvss":7.8,"epss":0.0452,"slug":"cve-2026-21519-microsoft-windows-type-confusion-in-desktop-window-manager","title":"Microsoft Windows type confusion in Desktop Window Manager","severity":"critical","exploited":true,"published_at":"2026-02-10T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2026-21519-microsoft-windows-type-confusion-in-desktop-window-manager"},{"cve":"CVE-2025-62221","cvss":7.8,"epss":0.0251,"slug":"cve-2025-62221-microsoft-windows-use-after-free-in-cloud-files-mini-filter","title":"Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.","severity":"critical","exploited":true,"published_at":"2025-12-09T18:15:56.517+00:00","url":"https://junglewise.ai/threats/cve-2025-62221-microsoft-windows-use-after-free-in-cloud-files-mini-filter"},{"cve":"CVE-2026-41089","cvss":9.8,"slug":"cve-2026-41089-microsoft-windows-stack-based-buffer-overflow-in-netlogon","title":"Microsoft Windows stack-based buffer overflow in Netlogon","severity":"critical","exploited":false,"published_at":"2026-05-12T18:17:20.72+00:00","url":"https://junglewise.ai/threats/cve-2026-41089-microsoft-windows-stack-based-buffer-overflow-in-netlogon"},{"cve":"CVE-2026-62810","cvss":7.8,"epss":0.0034,"slug":"cve-2026-62810-microsoft-active-directory-certificate-services-heap-overflow","title":"Microsoft Active Directory Certificate Services heap overflow","severity":"high","exploited":false,"published_at":"2026-09-08T18:18:03.337+00:00","url":"https://junglewise.ai/threats/cve-2026-62810-microsoft-active-directory-certificate-services-heap-overflow"},{"cve":"CVE-2026-69821","cvss":7.8,"epss":0.0033,"slug":"cve-2026-69821-microsoft-active-directory-certificate-services-privilege","title":"Microsoft Active Directory Certificate Services privilege escalation","severity":"high","exploited":false,"published_at":"2026-09-08T18:19:53.883+00:00","url":"https://junglewise.ai/threats/cve-2026-69821-microsoft-active-directory-certificate-services-privilege"},{"cve":"CVE-2026-56177","cvss":7.8,"epss":0.0033,"slug":"cve-2026-56177-microsoft-windows-server-use-after-free-privilege-escalation","title":"Microsoft Windows Server use-after-free privilege escalation","severity":"high","exploited":false,"published_at":"2026-09-08T18:17:42.563+00:00","url":"https://junglewise.ai/threats/cve-2026-56177-microsoft-windows-server-use-after-free-privilege-escalation"},{"cve":"CVE-2026-34330","cvss":7.8,"epss":0.0007,"slug":"cve-2026-34330-microsoft-windows-win32k-race-condition-in-grfx-component","title":"Microsoft Windows Win32K race condition in GRFX component","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:06.757+00:00","url":"https://junglewise.ai/threats/cve-2026-34330-microsoft-windows-win32k-race-condition-in-grfx-component"},{"cve":"CVE-2026-50362","cvss":7.8,"slug":"cve-2026-50362-microsoft-windows-refs-heap-overflow","title":"Microsoft Windows ReFS heap overflow","severity":"high","exploited":false,"published_at":"2026-07-14T18:17:36.58+00:00","url":"https://junglewise.ai/threats/cve-2026-50362-microsoft-windows-refs-heap-overflow"},{"cve":"CVE-2026-34351","cvss":7.8,"slug":"cve-2026-34351-microsoft-windows-tcp-ip-race-condition-privilege-escalation","title":"Microsoft Windows TCP/IP race condition privilege escalation","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:09.66+00:00","url":"https://junglewise.ai/threats/cve-2026-34351-microsoft-windows-tcp-ip-race-condition-privilege-escalation"},{"cve":"CVE-2026-77499","cvss":7.5,"epss":0.0117,"slug":"cve-2026-77499-microsoft-windows-dhcp-server-type-confusion-denial-of-service","title":"Microsoft Windows DHCP Server type confusion denial of service","severity":"high","exploited":false,"published_at":"2026-09-08T18:20:36.437+00:00","url":"https://junglewise.ai/threats/cve-2026-77499-microsoft-windows-dhcp-server-type-confusion-denial-of-service"}],"generated_at":"2026-09-26T09:24:00.138874+00:00"}