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Common Problems 111191

Windows Server 2025 — Hyper-V virtual switch loses external connectivity after Windows Update — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 5 July 2025 Affected versions: Windows Server 2025 đź“– ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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AlmaLinux 9 — qemu-kvm — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — qemu-kvm — multiple vulnerabilities (19 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 đź“– ~4 min read  â€˘  Source: AlmaLinux ALSA ALSA-2024:4278 Related CVEs: CVE-2024-4467 CVE-2023-3354 CVE-2024-26327 CVE-2024-3446 CVE-2024-7409 CVE-2023-3019 CVE-2023-3255 CVE-2023-42467  +11 more Upstream summary: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The […]

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Ubuntu 24.04 — redis — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — redis — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 July 2025 Affected versions: Ubuntu 24.04 (noble) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-8169-1 Related CVEs: CVE-2025-49844 CVE-2022-24834 CVE-2024-31449 CVE-2025-32023 CVE-2024-31228 CVE-2024-46981 CVE-2024-51741 Upstream summary: It was discovered that Redis incorrectly handled certain specially crafted Lua scripts. A remote attacker could possibly use […]

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NetBSD 10.0 — multiple — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — multiple — vulnerability — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 đź“– ~4 min read  â€˘  Source: NetBSD advisory NetBSD-SA-2023-007 Related CVEs: CVE-2023-45198 Upstream summary: A vulnerability in the NetBSD FTP server allows unauthenticated users to execute MLST and MLSD commands without authentication. This can lead to information leakage – unauthorized […]

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Ubuntu 20.04 — containerd-app — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — containerd-app — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 July 2025 Affected versions: Ubuntu 20.04 (focal) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-7983-1 Related CVEs: CVE-2025-64329 CVE-2024-25621 CVE-2024-40635 Upstream summary: David Leadbeater discovered that containerd incorrectly set certain directory path permissions. An attacker could possibly use this issue to achieve unauthorised access […]

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Common Problems 111142

Windows Server 2025 — Hyper-V integration services version mismatch between host and VM — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 5 July 2025 Affected versions: Windows Server 2025 đź“– ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Rocky Linux 10 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Rocky Linux 10

Rocky Linux 10 — grub2 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 10 đź“– ~4 min read  â€˘  Source: Rocky Linux RXSA RLSA-2026:4649 Related CVEs: CVE-2025-61662 Upstream summary: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The […]

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Ubuntu 24.04 — ruby-saml — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — ruby-saml — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 July 2025 Affected versions: Ubuntu 24.04 (noble) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-7409-1 Related CVEs: CVE-2025-25291 CVE-2025-25292 CVE-2025-25293 CVE-2016-5697 CVE-2017-11428 CVE-2024-45409 Upstream summary: It was discovered that ruby-saml did not correctly handle XML parsing. An attacker could possibly use this issue to […]

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Windows Server 2022 — KB5052000 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5052000 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

đź”´ Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 đź“– ~4 min read  â€˘  Source: Microsoft KB5052000 • MSRC update-guide entry Related CVEs: CVE-2025-21376 CVE-2025-26634 CVE-2025-21351 CVE-2025-21352 CVE-2025-21368 CVE-2025-21369 CVE-2025-21375 CVE-2025-21391  +12 more Affected components: Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root […]

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Ubuntu 22.04 — poppler — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — poppler — multiple vulnerabilities (17 CVEs) — patch and remediation guide

đźź  High   ⏱ 15–60 min  Last verified: 5 July 2025 Affected versions: Ubuntu 22.04 (jammy) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-7858-1 Related CVEs: CVE-2025-52885 CVE-2025-43718 CVE-2025-50420 CVE-2025-52886 CVE-2025-43903 CVE-2025-32364 CVE-2025-32365 CVE-2024-56378  +9 more Upstream summary: It was discovered that poppler incorrectly handled certain PDF files. An attacker could possibly use […]

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