# Microsoft Windows Internet Information Services vulnerabilities Source: https://junglewise.ai/threats/technologies/windows-internet-information-services Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/windows-internet-information-services.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 4 vulnerabilities in Microsoft Windows Internet Information Services: 2 in the last 7 days and 4 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-119961, was published on 10 November 2026. 2 vulnerabilities in the last four weeks, up from none in the four before. 1 critical against 0. ## Counts - Last 7 days: 2 - Last 30 days: 2 - Last 90 days: 4 - All time: 4 (1 critical, 0 exploited in the wild) ## About Microsoft Windows Internet Information Services Web server software for Windows that handles HTTP and HTTPS requests and serves web content and applications. ## Latest Microsoft Windows Internet Information Services vulnerabilities - [CVE-2026-119961: Microsoft Windows Internet Information Services race condition](https://junglewise.ai/threats/cve-2026-119961-concurrent-execution-using-shared-resource-with-improper) (high, CVSS 8.1, published 10 Nov 2026) - [CVE-2026-119936: Windows Internet Information Services integer underflow denial of service](https://junglewise.ai/threats/cve-2026-119936-integer-underflow-wrap-or-wraparound-in-windows-internet) (medium, CVSS 5.9, published 10 Nov 2026) - [CVE-2026-78459: Windows Internet Information Services heap buffer overflow](https://junglewise.ai/threats/cve-2026-78459-heap-based-buffer-overflow-in-windows-internet-information) (high, CVSS 7.8, published 13 Oct 2026) - [CVE-2026-70024: Microsoft Windows Internet Information Services stack buffer overflow](https://junglewise.ai/threats/cve-2026-70024-stack-based-buffer-overflow-in-windows-internet-information) (critical, CVSS 9.8, published 13 Oct 2026) ## Most severe Microsoft Windows Internet Information Services vulnerabilities - [CVE-2026-70024: Microsoft Windows Internet Information Services stack buffer overflow](https://junglewise.ai/threats/cve-2026-70024-stack-based-buffer-overflow-in-windows-internet-information) (critical, CVSS 9.8, published 13 Oct 2026) - [CVE-2026-119961: Microsoft Windows Internet Information Services race condition](https://junglewise.ai/threats/cve-2026-119961-concurrent-execution-using-shared-resource-with-improper) (high, CVSS 8.1, published 10 Nov 2026) - [CVE-2026-78459: Windows Internet Information Services heap buffer overflow](https://junglewise.ai/threats/cve-2026-78459-heap-based-buffer-overflow-in-windows-internet-information) (high, CVSS 7.8, published 13 Oct 2026) - [CVE-2026-119936: Windows Internet Information Services integer underflow denial of service](https://junglewise.ai/threats/cve-2026-119936-integer-underflow-wrap-or-wraparound-in-windows-internet) (medium, CVSS 5.9, published 10 Nov 2026) ## Vulnerabilities per week 2 vulnerabilities in the last four weeks, up from none in the four before. 1 critical against 0. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 2 | 1 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 2 | 0 | 0 | ## Other Microsoft technologies - [Microsoft Windows](https://junglewise.ai/threats/technologies/windows): 2,362 vulnerabilities - [Microsoft Windows 10](https://junglewise.ai/threats/technologies/windows-10): 589 vulnerabilities - [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2): 565 vulnerabilities - [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2): 534 vulnerabilities - [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025): 534 vulnerabilities - [Microsoft Windows Server 2022](https://junglewise.ai/threats/technologies/windows-server-2022): 528 vulnerabilities - [Microsoft Windows Server 2019](https://junglewise.ai/threats/technologies/windows-server-2019): 521 vulnerabilities - [Microsoft Windows Server 2012](https://junglewise.ai/threats/technologies/windows-server-2012): 517 vulnerabilities - [Microsoft Windows 11](https://junglewise.ai/threats/technologies/windows-11): 494 vulnerabilities - [Microsoft Windows Server 2016](https://junglewise.ai/threats/technologies/windows-server-2016): 476 vulnerabilities - [Microsoft Windows 10 1809](https://junglewise.ai/threats/technologies/windows-10-1809): 380 vulnerabilities - [Microsoft Windows 10 21h2](https://junglewise.ai/threats/technologies/windows-10-21h2): 373 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Microsoft Windows Internet Information Services vulnerabilities", https://junglewise.ai/threats/technologies/windows-internet-information-services, 13 November 2026.