Security Hardening

NetBSD 9.4 — SOPE — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — SOPE — vulnerability — patch and remediation guide

  • January 26, 2026
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-53603 Upstream summary: pkgsrc audit-packages flagged SOPE<2.4.3nb2 for vulnerability class 'denial-of-service'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-53603 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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

FreeBSD 15 — giflib — vulnerability — patch and remediation guide

  • January 26, 2026
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 26 January 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: giflib — heap overflow Related CVEs: CVE-2015-7555 Upstream summary: Hans Jerry Illikainen reports: A heap overflow may occur in the giffix utility included in giflib-5.1.1 when processing records of the […]

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AlmaLinux 8 — perl-Digest — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — perl-Digest — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • January 26, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:8096 Related CVEs: CVE-2025-40909 CVE-2023-47038 Upstream summary: Perl is a high-level programming language that is commonly used for system administration utilities and web programming. Security Fix(es): * perl: Perl threads have a […]

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Debian 13 — tpm2-tools — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — tpm2-tools — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • January 26, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 26 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-7524 CVE-2021-3565 CVE-2024-29038 CVE-2024-29039 Upstream summary: tpm2-tools versions before 1.1.1 are vulnerable to a password leak due to transmitting password in plaintext from client to server when generating […]

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Debian 13 — openntpd — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — openntpd — vulnerability — patch and remediation guide

  • January 26, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 January 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-5117 Upstream summary: OpenNTPD before 6.0p1 does not validate the CN for HTTPS constraint requests, which allows remote attackers to bypass the man-in-the-middle mitigations via a crafted timestamp constraint […]

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Debian 13 — yadm — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — yadm — vulnerability — patch and remediation guide

  • January 26, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 January 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-11353 Upstream summary: yadm (yet another dotfile manager) 1.10.0 has a race condition (related to the behavior of git commands in setting permissions for new files and directories), which […]

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Debian 13 — libproxy — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libproxy — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • January 26, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 26 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-4505 CVE-2012-5580 CVE-2020-25219 CVE-2020-26154 Upstream summary: Heap-based buffer overflow in the px_pac_reload function in lib/pac.c in libproxy 0.2.x and 0.3.x allows remote servers to have an unspecified impact […]

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Debian 13 — duck — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — duck — vulnerability — patch and remediation guide

  • January 26, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 January 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-1239 Upstream summary: duck before 0.10 did not properly handle loading of untrusted code from the current directory. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Windows Server 2022 — KB5075971 — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5075971 — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5075971 • MSRC update-guide entry Related CVEs: CVE-2026-21235 CVE-2026-21236 CVE-2026-21533 CVE-2026-21513 CVE-2026-21510 CVE-2026-21508 CVE-2026-21253 CVE-2026-21239  +5 more Affected components: Windows Server 2022 Microsoft summary: Use after free in Microsoft Graphics Component allows […]

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Debian 13 — wayland — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — wayland — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • January 26, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-16612 CVE-2021-3782 Upstream summary: libXcursor before 1.1.15 has various integer overflows that could lead to heap buffer overflows when processing malicious cursors, e.g., with programs like GIMP. It […]

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AIX AlmaLinux Alpine Linux authentication authorization Backup Recovery Boot Startup Cloud Integration Common Problems Cpu Memory Database Debian Debian 11 Debian 12 Bookworm Debian 13 Trixie DNS Firewall Fix Prevention FreeBSD FreeBSD 12 FreeBSD 13 FreeBSD 14 FreeBSD 15 Kernel Drivers Logging Monitoring Lvm Raid NetBSD Networking openSUSE Operations Oracle Linux Oracle Linux 8 Oracle Linux 9 Package Management Performance Proxy Security Hardening SLES Storage Disk Systemd Services Tls Ssl Troubleshooting ubuntu VPN windows server

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