Security Hardening

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2025-20530)

🟠 High   ⏱ 15–60 min  Last verified: 2 January 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-20530 Related CVEs: CVE-2012-3430 CVE-2015-6937 CVE-2016-5244 CVE-2018-12928 CVE-2018-5332 CVE-2018-5333 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 9 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — firefox — vulnerability — patch and remediation guide (ELSA-2025-18155)

🟠 High   ⏱ 15–60 min  Last verified: 2 January 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-18155 Related CVEs: CVE-2025-11709 CVE-2025-11714 CVE-2025-11715 CVE-2025-11710 CVE-2025-11712 CVE-2025-11708 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Windows Server 2025 — KB5055527 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2025

Windows Server 2025 — KB5055527 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2025 📖 ~4 min read  •  Source: Microsoft KB5055527 • MSRC update-guide entry Related CVEs: CVE-2025-26663 CVE-2025-26686 CVE-2025-26670 CVE-2025-27480 CVE-2025-27482 CVE-2025-27491 CVE-2025-26664 CVE-2025-26665  +12 more Affected components: Windows Server 2025 Microsoft summary: Use after free in Windows LDAP – Lightweight […]

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FreeBSD 15 — lynis — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — lynis — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Several issues in Lynis Upstream summary: lynis update: This release resolves two security issues CVE-2020-13882 – Discovered by Sander Bos, code submission by Katarina Durechova CVE-2019-13033 – Discovered by Sander […]

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FreeBSD 15 — pypy — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — pypy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Python — DoS via malformed XML-RPC / HTTP POST request Related CVEs: CVE-2012-0845 Upstream summary: Jan Lieskovsky reports, A denial of service flaw was found in the way Simple XML-RPC […]

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FreeBSD 15 — postgresql11-server — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — postgresql11-server — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PostgreSQL Server — execute arbitrary SQL code as DBA user Related CVEs: CVE-2019-10129 CVE-2019-10130 CVE-2019-10164 CVE-2019-10208 CVE-2019-10209 CVE-2020-1720 CVE-2021-23214 CVE-2021-23222  +2 more Upstream summary: The PostgreSQL project reports: Confine additional […]

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FreeBSD 15 — cinny — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — cinny — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Matrix clients — mxc uri validation in js sdk Related CVEs: CVE-2021-40823 CVE-2021-40824 CVE-2022-36059 CVE-2022-36060 CVE-2022-39236 CVE-2022-39249 CVE-2022-39250 CVE-2022-39251  +3 more Upstream summary: matrix-js-sdk upstream reports: matrix-js-sdk before 34.11.0 is […]

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FreeBSD 15 — extman — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — extman — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: extman — password bypass vulnerability Upstream summary: Extmail team reports: Emergency update #4 fixes a serious security vulnerability. Successful exploit of this vulnerability would allow attacker to change user's password […]

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FreeBSD 15 — xpcd — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — xpcd — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xpcd — buffer overflow Related CVEs: CVE-2005-0074 Upstream summary: Debian Project reports: Erik Sjolund discovered a buffer overflow in pcdsvgaview, an SVGA PhotoCD viewer. xpcd-svga is part of xpcd and […]

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FreeBSD 15 — silgraphite — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — silgraphite — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 1 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: graphite2 — code execution vulnerability Related CVEs: CVE-2016-1521 CVE-2016-1522 CVE-2016-1523 CVE-2016-1526 Upstream summary: Talos reports: An exploitable denial of service vulnerability exists in the font handling of Libgraphite. A specially […]

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