Operations

Windows Server 2019 — KB5020023 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5020023 — security update — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5020023 • MSRC update-guide entry Related CVEs: CVE-2023-21712 Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

Read more
NetBSD 9.4 — ap-mono — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ap-mono — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2010-4225 Upstream summary: pkgsrc audit-packages flagged ap{2,22}-mono>=2.8<2.8.2 for vulnerability class 'sensitive-information-exposure'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-4225 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

Read more
Alpine Linux 3.20 — ruby-rexml — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — ruby-rexml — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 3.3.9-r0 📖 ~4 min read  •  Source: Alpine secdb entry — ruby-rexml 3.3.9-r0 Related CVEs: CVE-2024-39908 CVE-2024-41123 CVE-2024-41946 CVE-2024-43398 CVE-2024-49761 Upstream summary: Alpine main repository for vv3.20 ships ruby-rexml 3.3.9-r0 which addresses CVE-2024-39908. Table of contents […]

Read more
openSUSE Tumbleweed — perl — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — perl — multiple vulnerabilities (18 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:15003-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-56406 CVE-2023-47039 CVE-2025-40909 CVE-2023-47038 CVE-2005-3962 CVE-2007-5116 CVE-2010-2761 CVE-2010-4410  +10 more Upstream summary: A heap buffer overflow vulnerability was discovered in Perl. Release branches 5.34, 5.36, […]

Read more
AlmaLinux 8 — ncompress — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — ncompress — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:4681 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
Windows Server 2019 — KB5022282 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5022282 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5022282 • MSRC update-guide entry Related CVEs: CVE-2023-21712 CVE-2023-21535 CVE-2023-21546 CVE-2023-21543 CVE-2023-21548 CVE-2023-21551 CVE-2023-21555 CVE-2023-21556  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

Read more
NetBSD 9.4 — ap13-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ap13-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2009-0796 CVE-2007-1349 Upstream summary: pkgsrc audit-packages flagged ap13-perl<1.29nb2 for vulnerability class 'cross-site-scripting'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0796 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

Read more
Alpine Linux 3.20 — runc — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — runc — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.1.4-r7 📖 ~4 min read  •  Source: Alpine secdb entry — runc 1.1.4-r7 Related CVEs: CVE-2023-27561 CVE-2023-25809 CVE-2023-28642 CVE-2022-29162 CVE-2024-45310 CVE-2024-21626 CVE-2021-43784 CVE-2021-30465  +3 more Upstream summary: Alpine community repository for vv3.20 ships runc 1.1.4-r7 which […]

Read more
openSUSE Tumbleweed — hauler — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — hauler — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:14996-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-0406 CVE-2025-11579 Upstream summary: A flaw was discovered in the mholt/archiver package. This flaw allows an attacker to create a specially crafted tar file, which, […]

Read more
AlmaLinux 8 — net-tools — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — net-tools — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:4434 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
CHAT