Let’s Encrypt provides free, automated, and open TLS certificates. Certbot is the official Let’s Encrypt client that automates certificate issuance and renewal. This guide installs Certbot on Ubuntu 26.04 LTS and manages SSL certificates for Nginx and Apache. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Nginx or Apache installed A […]
🟡 Medium ⏱ 5–30 min Last verified: 30 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 […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.24-r0 📖 ~4 min read • Source: Alpine secdb entry — perl-net-cidr-lite 0.24-r0 Related CVEs: CVE-2026-45190 CVE-2026-45191 CVE-2026-40198 CVE-2026-40199 Upstream summary: Alpine main repository for vedge ships perl-net-cidr-lite 0.24-r0 which addresses CVE-2026-45190. Table of contents Symptom […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Rocky Linux 10 📖 ~4 min read • Source: Rocky Linux RXSA RLSA-2026:8312 Related CVEs: CVE-2026-1519 CVE-2025-40778 CVE-2025-40780 CVE-2025-8677 Upstream summary: The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server […]
Introduction Setting up install timescaledb on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install TimescaleDB on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the result on […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory RHSA-2024:9158 (see also SUSE bugzilla) Related CVEs: CVE-2021-43612 CVE-2026-46433 Upstream summary: In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via […]
🟢 Low ⏱ 5–15 min Last verified: 30 July 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2025-46336 CVE-2026-39324 Upstream summary: Rack::Session is a session management implementation for Rack. In versions starting from 2.0.0 to before 2.1.1, when using the Rack::Session::Pool middleware, and provided the […]
🟠 High ⏱ 5–30 min Last verified: 30 July 2026 Affected versions: Ubuntu 26.04 LTS Ubuntu 26.04 Ubuntu 26.04.1 📖 ~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 […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 10 📖 ~4 min read • Source: Red Hat advisory RHSA RHSA-2026:19154 Related CVEs: CVE-2026-23868 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]
🟢 Low ⏱ 5–15 min Last verified: 30 July 2026 Affected versions: Debian 13 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2017-8364 Upstream summary: The read_buf function in stream.c in rzip 2.1 allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have […]
