Windows Server

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5055518 • MSRC update-guide entry Related CVEs: CVE-2025-26663 CVE-2025-26686 CVE-2025-26670 CVE-2025-27491 CVE-2023-40547 CVE-2025-26665 CVE-2025-26666 CVE-2025-26669  +12 more Affected components: Windows Server 2022 Windows Server 2022, 23H2 Edition (Server Core installation) Windows Server […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5065429 • 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 […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5034274 • MSRC update-guide entry Related CVEs: CVE-2024-29059 CVE-2024-21312 CVE-2024-0056 CVE-2024-0057 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 Table of contents Symptom & Impact Environment & Reproduction […]

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5053593 • MSRC update-guide entry Related CVEs: CVE-2025-21247 Affected components: Windows Server 2025 Microsoft summary: Improper resolution of path equivalence in Windows MapUrlToZone allows an unauthorized attacker to bypass a security feature […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5043076 • MSRC update-guide entry Related CVEs: CVE-2024-38119 CVE-2024-38240 CVE-2024-38241 CVE-2024-38242 CVE-2024-38249 CVE-2024-38250 CVE-2024-38252 CVE-2024-38253  +12 more Affected components: Windows Server 2022 Windows Server 2022, 23H2 Edition (Server Core installation) Table of […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5040456 • MSRC update-guide entry Related CVEs: CVE-2024-38060 CVE-2024-38077 CVE-2024-38074 CVE-2024-38191 CVE-2024-28899 CVE-2024-30081 CVE-2024-35270 CVE-2024-37969  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5062554 • MSRC update-guide entry Related CVEs: CVE-2024-36357 CVE-2024-36350 CVE-2025-47980 CVE-2025-47981 CVE-2025-48822 CVE-2025-55230 CVE-2025-53789 CVE-2025-47159  +12 more Affected components: Windows Server 2016 Microsoft summary: The vulnerability assigned to this CVE is in […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5063871 • MSRC update-guide entry Related CVEs: CVE-2025-50177 CVE-2025-53766 CVE-2025-53778 CVE-2025-49751 CVE-2025-49743 CVE-2025-49761 CVE-2025-49762 CVE-2025-50153  +12 more Affected components: Windows Server 2022 Microsoft summary: Use after free in Windows Message Queuing allows […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5043083 • MSRC update-guide entry Related CVEs: CVE-2024-38119 CVE-2024-38240 CVE-2024-38241 CVE-2024-38242 CVE-2024-38249 CVE-2024-38250 CVE-2024-38254 CVE-2024-38256  +12 more Affected components: Windows Server 2016 Table of contents Symptom & Impact Environment & Reproduction Root […]

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5053627 • MSRC update-guide entry Related CVEs: CVE-2025-24035 CVE-2025-24064 CVE-2025-26645 CVE-2024-9157 CVE-2025-24987 CVE-2025-24988 CVE-2025-21180 CVE-2025-24996  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Microsoft summary: Sensitive data […]