Windows Server

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5055526 • MSRC update-guide entry Related CVEs: CVE-2025-26663 CVE-2025-26686 CVE-2025-26670 CVE-2025-27480 CVE-2025-27482 CVE-2025-27491 CVE-2025-26664 CVE-2025-26665  +12 more Affected components: Windows Server 2025 Microsoft summary: Use after free in Windows LDAP – Lightweight […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5053599 • MSRC update-guide entry Related CVEs: CVE-2025-24035 CVE-2025-24045 CVE-2025-24064 CVE-2025-26645 CVE-2024-9157 CVE-2025-24044 CVE-2025-24987 CVE-2025-24988  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: Sensitive data storage in improperly […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5065425 • MSRC update-guide entry Related CVEs: CVE-2025-54918 CVE-2025-55226 CVE-2025-55228 CVE-2025-55236 CVE-2025-53799 CVE-2025-53800 CVE-2025-55224 CVE-2025-48807  +12 more Affected components: Windows Server 2025 Microsoft summary: Improper authentication in Windows NTLM allows an authorized […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5070886 • MSRC update-guide entry Related CVEs: CVE-2025-59287 Affected components: Windows Server 2025 Microsoft summary: Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5050063 • MSRC update-guide entry Related CVEs: CVE-2025-21294 CVE-2025-21298 CVE-2025-21307 CVE-2025-21411 CVE-2025-21413 CVE-2025-21210 CVE-2025-21214 CVE-2025-21215  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5055557 • MSRC update-guide entry Related CVEs: CVE-2025-26663 CVE-2025-26686 CVE-2025-26670 CVE-2025-27480 CVE-2023-40547 CVE-2025-26664 CVE-2025-26665 CVE-2025-26669  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: Use after free in Windows […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5065429 • MSRC update-guide entry Related CVEs: CVE-2025-54918 CVE-2025-55226 CVE-2025-53799 CVE-2025-53800 CVE-2025-48807 CVE-2025-49734 CVE-2025-54099 CVE-2025-54101  +12 more Affected components: Windows Server 2016 Microsoft summary: Improper authentication in Windows NTLM allows an authorized […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5053606 • MSRC update-guide entry Related CVEs: CVE-2025-24035 CVE-2025-26645 CVE-2024-9157 CVE-2025-24044 CVE-2025-24987 CVE-2025-24988 CVE-2025-21180 CVE-2025-24995  +12 more Affected components: Windows Server 2025 Microsoft summary: Sensitive data storage in improperly locked memory in […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5063950 • MSRC update-guide entry Related CVEs: CVE-2025-50177 CVE-2025-53766 CVE-2025-53778 CVE-2025-49743 CVE-2025-49761 CVE-2025-49762 CVE-2025-50153 CVE-2025-50154  +12 more Affected components: Windows Server 2016 Microsoft summary: Use after free in Windows Message Queuing allows […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5050049 • MSRC update-guide entry Related CVEs: CVE-2025-21294 CVE-2025-21295 CVE-2025-21296 CVE-2025-21297 CVE-2025-21298 CVE-2025-21307 CVE-2025-21411 CVE-2025-21413  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]