Fedora 42 — nextcloud — multiple vulnerabilities (12 CVEs) — patch and remediation guide

July 17, 2026
Linux
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🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Fedora 42 📖 ~4 min read • Source: Fedora update FEDORA-2026-2fed8dd674 Related CVEs: CVE-2026-33916 CVE-2026-33937 CVE-2026-33938 CVE-2026-33939 CVE-2026-33940 CVE-2026-33941 CVE-2026-4800 CVE-2026-39865 +4 more Upstream summary: 33.0.3 Release Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

Ubuntu 26.04 LTS – UFW policy change blocks SSH access – Fix & Prevention

July 17, 2026
Linux
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🔴 Critical ⏱ 5–30 min Last verified: 17 July 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

Rocky Linux 8 — kernel — multiple vulnerabilities (20 CVEs) — patch and remediation guide

July 17, 2026
Linux
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🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read • Source: Rocky Linux RXSA RLSA-2026:19666 Related CVEs: CVE-2026-46300 CVE-2026-46333 CVE-2024-41073 CVE-2025-40252 CVE-2025-68724 CVE-2026-23401 CVE-2026-31402 CVE-2026-31431 +12 more Upstream summary: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security […]

FreeBSD 15 — openssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide

July 17, 2026
BSD
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🟠 High ⏱ 15–60 min Last verified: 17 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: OpenSSL — Multiple vulnerabilities Related CVEs: CVE-2004-0079 CVE-2005-2969 CVE-2006-2937 CVE-2006-2938 CVE-2006-2940 CVE-2006-3738 CVE-2006-4339 CVE-2006-4343 +12 more Upstream summary: The OpenSSL project reports: Seven vulnerabilities in OpenSSL library. Highest classification Moderate. […]

Ubuntu 14.04 — python3.4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

July 17, 2026
Linux
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🟠 High ⏱ 15–60 min Last verified: 17 July 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-8018-2 Related CVEs: CVE-2025-15367 CVE-2025-15366 CVE-2026-0865 https://bugs.launchpad.net/bugs/2143706 CVE-2025-15282 CVE-2026-0672 CVE-2025-13837 CVE-2025-11468 +12 more Upstream summary: USN-8018-1 fixed vulnerabilities in python3. That update introduced regressions. The patches for CVE-2025-15366 and CVE-2025-15367 […]

How to Install Keepalived for High Availability on FreeBSD 15

July 16, 2026
FreeBSD
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Introduction This guide explains how to Install Keepalived for High Availability on FreeBSD 15 on FreeBSD 15. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

FreeBSD 15 — zabbix3-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide

July 16, 2026
BSD
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🟢 Low ⏱ 5–15 min Last verified: 16 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: Zabbix — Remote code execution Related CVEs: CVE-2017-2824 CVE-2020-11800 Upstream summary: Zabbix reports: Fixed security vulnerability cve-2020-11800 (remote code execution). (ZBX-17600) Table of contents Symptom & Impact Environment & Reproduction […]

Amazon Linux 2023 — dovecot — multiple vulnerabilities (5 CVEs) — patch and remediation guide

July 16, 2026
Linux
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🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read • Source: Amazon Linux advisory ALAS2023-2026-1570 Related CVEs: CVE-2026-27856 CVE-2026-27857 CVE-2026-27858 CVE-2024-23184 CVE-2024-23185 Upstream summary: Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to […]

FreeBSD 15 — openzfs-kmod — security advisory — patch and remediation guide

July 16, 2026
BSD
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🟢 Low ⏱ 5–15 min Last verified: 16 July 2026 Affected versions: FreeBSD 15 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: sysutils/openzfs-kmod — critical permissions issues Upstream summary: Andrew Walker reports: Issue 1: Users are always granted permissions to cd into a directory. The check for whether execute is present on […]

How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Apache on Ubuntu 26.04

July 16, 2026
Linux
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Apache HTTP Server is one of the most widely used web servers in the world. Its modular architecture supports a huge range of functionality including URL rewriting, authentication, and SSL. This guide installs Apache on Ubuntu 26.04 LTS and configures the firewall. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server A […]

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Fedora 42 — nextcloud — multiple vulnerabilities (12 CVEs) — patch and remediation guide

Ubuntu 26.04 LTS – UFW policy change blocks SSH access – Fix & Prevention

Rocky Linux 8 — kernel — multiple vulnerabilities (20 CVEs) — patch and remediation guide

FreeBSD 15 — openssl — multiple vulnerabilities (20 CVEs) — patch and remediation guide

Ubuntu 14.04 — python3.4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

How to Install Keepalived for High Availability on FreeBSD 15

FreeBSD 15 — zabbix3-server — multiple vulnerabilities (2 CVEs) — patch and remediation guide

Amazon Linux 2023 — dovecot — multiple vulnerabilities (5 CVEs) — patch and remediation guide

FreeBSD 15 — openzfs-kmod — security advisory — patch and remediation guide

How to Install Apache on Ubuntu 26.04

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