# Microsoft Windows Server 2012 R2 vulnerabilities Source: https://junglewise.ai/threats/technologies/windows-server-2012-r2 Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/windows-server-2012-r2.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 29 vulnerabilities in Microsoft Windows Server 2012 R2: 0 in the last 7 days and 0 in the last 90 days, 3 of them critical and 1 exploited in the wild. The most recent, CVE-2026-58627, was published on 14 July 2026. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 0 - All time: 29 (3 critical, 1 exploited in the wild) ## About Microsoft Windows Server 2012 R2 Windows Server 2012 R2 is a server operating system for enterprise data centers and network infrastructure. ## Latest Microsoft Windows Server 2012 R2 vulnerabilities - [CVE-2026-58627: Microsoft Windows DHCP Server denial of service](https://junglewise.ai/threats/cve-2026-58627-microsoft-windows-dhcp-server-denial-of-service) (high, CVSS 7.5, published 14 Jul 2026) - [CVE-2026-57096: Microsoft Windows RRAS heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-57096-microsoft-windows-rras-heap-overflow-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-56647: Microsoft Windows Remote Access Service privilege escalation](https://junglewise.ai/threats/cve-2026-56647-microsoft-windows-remote-access-service-privilege-escalation) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-56159: Microsoft Windows DHCP Server heap overflow remote code execution](https://junglewise.ai/threats/cve-2026-56159-microsoft-windows-dhcp-server-heap-overflow-remote-code-execution) (critical, CVSS 9.8, published 14 Jul 2026) - [CVE-2026-54121: Microsoft Active Directory Certificate Services privilege escalation](https://junglewise.ai/threats/cve-2026-54121-microsoft-active-directory-certificate-services-privilege) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-50686: Microsoft Windows OLE type confusion remote code execution](https://junglewise.ai/threats/cve-2026-50686-microsoft-windows-ole-type-confusion-remote-code-execution) (high, CVSS 8.1, published 14 Jul 2026) - [CVE-2026-50685: Microsoft Windows DHCP Server double free remote code execution](https://junglewise.ai/threats/cve-2026-50685-microsoft-windows-dhcp-server-double-free-remote-code-execution) (high, CVSS 7.5, published 14 Jul 2026) - [CVE-2026-50684: Microsoft AD FS cross-site scripting in web page generation](https://junglewise.ai/threats/cve-2026-50684-microsoft-ad-fs-cross-site-scripting-in-web-page-generation) (medium, CVSS 4.8, published 14 Jul 2026) - [CVE-2026-50683: Microsoft Windows DHCP Server heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-50683-microsoft-windows-dhcp-server-heap-overflow-privilege-escalation) (high, CVSS 8, published 14 Jul 2026) - [CVE-2026-50666: Microsoft Windows Remote Access Connection Manager use after free privilege escalation](https://junglewise.ai/threats/cve-2026-50666-microsoft-windows-remote-access-connection-manager-use-after-free) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-50518: Microsoft Windows DHCP Server heap overflow remote code execution](https://junglewise.ai/threats/cve-2026-50518-microsoft-windows-dhcp-server-heap-overflow-remote-code-execution) (critical, CVSS 9.8, published 14 Jul 2026) - [CVE-2026-50480: Microsoft Windows heap overflow in WPAD](https://junglewise.ai/threats/cve-2026-50480-microsoft-windows-heap-overflow-in-wpad) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-50435: Microsoft Windows Overlay Filter privilege escalation](https://junglewise.ai/threats/cve-2026-50435-microsoft-windows-overlay-filter-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-50426: Microsoft Windows DNS Server relative path traversal code execution](https://junglewise.ai/threats/cve-2026-50426-microsoft-windows-dns-server-relative-path-traversal-code) (medium, CVSS 6.8, published 14 Jul 2026) - [CVE-2026-50394: Microsoft Windows Media information disclosure](https://junglewise.ai/threats/cve-2026-50394-microsoft-windows-media-information-disclosure) (medium, CVSS 5.5, published 14 Jul 2026) - [CVE-2026-50370: Microsoft Windows DHCP Server heap buffer overflow](https://junglewise.ai/threats/cve-2026-50370-microsoft-windows-dhcp-server-heap-buffer-overflow) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-50368: Microsoft Active Directory Federation Services stack overflow denial of service](https://junglewise.ai/threats/cve-2026-50368-microsoft-active-directory-federation-services-stack-overflow) (high, CVSS 7.5, published 14 Jul 2026) - [CVE-2026-50363: Microsoft Windows Push Notifications heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-50363-microsoft-windows-push-notifications-heap-overflow-privilege) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-50355: Microsoft Active Directory Federation Services stack buffer overflow](https://junglewise.ai/threats/cve-2026-50355-microsoft-active-directory-federation-services-stack-buffer) (high, CVSS 7.5, published 14 Jul 2026) - [CVE-2026-50324: Microsoft AD FS infinite loop denial of service](https://junglewise.ai/threats/cve-2026-50324-microsoft-ad-fs-infinite-loop-denial-of-service) (medium, CVSS 5.9, published 14 Jul 2026) - [CVE-2026-57979: Microsoft Windows RDP out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-57979-microsoft-windows-rdp-out-of-bounds-read-information-disclosure) (medium, CVSS 6.5, published 14 Jul 2026) - [CVE-2026-56155: Microsoft AD FS privilege escalation via insufficient access control granularity](https://junglewise.ai/threats/cve-2026-56155-microsoft-ad-fs-privilege-escalation-via-insufficient-access) (critical, exploited in the wild, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-54987: Microsoft Windows heap overflow in Windows Overlay Filter](https://junglewise.ai/threats/cve-2026-54987-microsoft-windows-heap-overflow-in-windows-overlay-filter) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-50299: Microsoft Windows Storage Spaces Direct integer overflow](https://junglewise.ai/threats/cve-2026-50299-microsoft-windows-storage-spaces-direct-integer-overflow) (medium, CVSS 6.8, published 14 Jul 2026) - [CVE-2026-49181: Microsoft Windows DHCP Client integer underflow privilege escalation](https://junglewise.ai/threats/cve-2026-49181-microsoft-windows-dhcp-client-integer-underflow-privilege) (high, CVSS 7.5, published 14 Jul 2026) ## Most severe Microsoft Windows Server 2012 R2 vulnerabilities - [CVE-2026-56155: Microsoft AD FS privilege escalation via insufficient access control granularity](https://junglewise.ai/threats/cve-2026-56155-microsoft-ad-fs-privilege-escalation-via-insufficient-access) (critical, exploited in the wild, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-56159: Microsoft Windows DHCP Server heap overflow remote code execution](https://junglewise.ai/threats/cve-2026-56159-microsoft-windows-dhcp-server-heap-overflow-remote-code-execution) (critical, CVSS 9.8, published 14 Jul 2026) - [CVE-2026-50518: Microsoft Windows DHCP Server heap overflow remote code execution](https://junglewise.ai/threats/cve-2026-50518-microsoft-windows-dhcp-server-heap-overflow-remote-code-execution) (critical, CVSS 9.8, published 14 Jul 2026) - [CVE-2026-56647: Microsoft Windows Remote Access Service privilege escalation](https://junglewise.ai/threats/cve-2026-56647-microsoft-windows-remote-access-service-privilege-escalation) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-54121: Microsoft Active Directory Certificate Services privilege escalation](https://junglewise.ai/threats/cve-2026-54121-microsoft-active-directory-certificate-services-privilege) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-50666: Microsoft Windows Remote Access Connection Manager use after free privilege escalation](https://junglewise.ai/threats/cve-2026-50666-microsoft-windows-remote-access-connection-manager-use-after-free) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-50370: Microsoft Windows DHCP Server heap buffer overflow](https://junglewise.ai/threats/cve-2026-50370-microsoft-windows-dhcp-server-heap-buffer-overflow) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-48564: Microsoft Windows DHCP Server heap buffer overflow](https://junglewise.ai/threats/cve-2026-48564-microsoft-windows-dhcp-server-heap-buffer-overflow) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-50686: Microsoft Windows OLE type confusion remote code execution](https://junglewise.ai/threats/cve-2026-50686-microsoft-windows-ole-type-confusion-remote-code-execution) (high, CVSS 8.1, published 14 Jul 2026) - [CVE-2026-33826: Microsoft Windows Active Directory improper input validation remote code execution](https://junglewise.ai/threats/cve-2026-33826-microsoft-windows-active-directory-improper-input-validation) (high, CVSS 8, published 14 Apr 2026) ## Vulnerabilities per week Nothing was published in the last eight weeks. | 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 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 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 Server 2012 R2 vulnerabilities", https://junglewise.ai/threats/technologies/windows-server-2012-r2, 11 November 2026.