Fix Prevention

Alpine Linux 3.20 — ircii — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — ircii — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 20210314-r0 📖 ~4 min read  •  Source: Alpine secdb entry — ircii 20210314-r0 Related CVEs: CVE-2021-29376 Upstream summary: Alpine community repository for vv3.20 ships ircii 20210314-r0 which addresses CVE-2021-29376. Table of contents Symptom & Impact Environment […]

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Windows Server 2019 — KB5043055 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5043055 — 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 KB5043055 • MSRC update-guide entry Related CVEs: CVE-2024-38119 CVE-2024-38236 CVE-2024-38240 CVE-2024-38241 CVE-2024-38242 CVE-2024-38249 CVE-2024-38250 CVE-2024-38252  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

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Oracle Linux 8 — mingw-libpng — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mingw-libpng — vulnerability — patch and remediation guide (ELSA-2026-0125)

🟠 High   ⏱ 15–60 min  Last verified: 30 April 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0125 Related CVEs: CVE-2025-64720 CVE-2025-65018 CVE-2025-66293 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Windows Server 2019 — KB5065509 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5065509 — 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 KB5065509 • MSRC update-guide entry Related CVEs: CVE-2025-54918 CVE-2025-55226 CVE-2025-53799 CVE-2025-53797 CVE-2025-53798 CVE-2025-54095 CVE-2025-54096 CVE-2025-54097  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: Improper authentication in Windows NTLM […]

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CentOS Stream 10 — ipa — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — ipa — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 April 2025 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:20994 Related CVEs: CVE-2025-7493 CVE-2025-4404 Upstream summary: AlmaLinux Identity Management (IdM) is a centralized authentication, identity management, and authorization solution for both traditional and cloud-based enterprise environments. Security Fix(es): * FreeIPA: […]

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openSUSE Leap 15.6 — python311-asteval — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.6

openSUSE Leap 15.6 — python311-asteval — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.6 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:0052-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-24359 Upstream summary: ASTEVAL is an evaluator of Python expressions and statements. Prior to version 1.0.6, if an attacker can control the input to […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50142)

🟠 High   ⏱ 15–60 min  Last verified: 30 April 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50142 Related CVEs: CVE-2025-40215 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Configure DKIM, SPF, and DMARC on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure DKIM, SPF, and DMARC on RHEL 9

Email authentication through DKIM, SPF, and DMARC is no longer optional — major providers like Gmail and Outlook reject or junk messages from servers that lack these records. DKIM (DomainKeys Identified Mail) adds a cryptographic signature to outgoing messages, SPF (Sender Policy Framework) publishes a DNS record declaring which servers may send mail for your […]

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NetBSD 10.0 — xalan-j — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — xalan-j — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2014-0107 Upstream summary: pkgsrc audit-packages flagged xalan-j>=2.7.0<2.7.2 for vulnerability class 'security-bypass'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0107 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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