Security Hardening

Ubuntu 18.04 — python-aiohttp — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — python-aiohttp — multiple vulnerabilities (16 CVEs) — patch and remediation guide

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8032-1 Related CVEs: CVE-2025-69228 CVE-2025-69225 CVE-2025-69226 CVE-2025-69229 CVE-2025-69223 CVE-2025-69224 CVE-2025-69227 CVE-2023-49081  +8 more Upstream summary: Charles Chan discovered that AIOHTTP incorrectly handled the decompression of compressed requests. A remote attacker […]

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Oracle Linux 9 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — kernel — vulnerability — patch and remediation guide (ELSA-2026-0445)

  • March 5, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 5 March 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0445 Related CVEs: CVE-2025-39806 CVE-2025-39840 CVE-2025-39883 CVE-2025-40240 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Oracle Linux 8 — resource-agents — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — resource-agents — vulnerability — patch and remediation guide (ELSA-2026-13902)

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-13902 Related CVEs: CVE-2026-30922 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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NetBSD 9.4 — element-web — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — element-web — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • March 5, 2026
  • BSD
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🟡 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-2024-47771 CVE-2025-59161 CVE-2024-51749 CVE-2024-47779 CVE-2024-51750 CVE-2025-32026 Upstream summary: pkgsrc audit-packages flagged element-web<1.11.81 for vulnerability class 'expose-access-tokens'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2024-47771 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Oracle Linux 10 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — firefox — vulnerability — patch and remediation guide (ELSA-2025-10073)

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-10073 Related CVEs: CVE-2025-6429 CVE-2025-6424 CVE-2025-6430 CVE-2025-6425 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2026-6188)

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-6188 Related CVEs: CVE-2026-3889 CVE-2026-4371 CVE-2026-4684 CVE-2026-4685 CVE-2026-4686 CVE-2026-4687 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — postgresql:13 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — postgresql:13 — vulnerability — patch and remediation guide (ELSA-2025-1736)

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-1736 Related CVEs: CVE-2025-1094 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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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-2025-20553)

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20553 Related CVEs: CVE-2022-48773 CVE-2022-48828 CVE-2022-48829 CVE-2024-57996 CVE-2025-37752 CVE-2025-37958 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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CentOS Stream 9 — python-urllib3 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — python-urllib3 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • March 5, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 5 March 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:1087 Related CVEs: CVE-2025-66418 CVE-2025-66471 CVE-2026-21441 CVE-2024-37891 CVE-2023-43804 CVE-2023-45803 Upstream summary: Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and […]

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Windows Server 2016 — KB5078774 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5078774 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5078774 • MSRC update-guide entry Related CVEs: CVE-2026-23668 CVE-2026-23669 CVE-2026-23672 CVE-2026-23673 CVE-2026-24285 CVE-2026-24289 CVE-2026-24291 CVE-2026-24294  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Microsoft summary: Concurrent execution […]

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