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Ubuntu 14.04 LTS UFW Rules Unexpectedly Blocking Outbound Traffic

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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 & Cross-Refs References & Further […]

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CentOS Stream 10 — python-urllib3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — python-urllib3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:1086 Related CVEs: CVE-2025-66418 CVE-2025-66471 CVE-2026-21441 Upstream summary: Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python […]

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Debian 13 — pdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — pdns-recursor — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2069 CVE-2006-4251 CVE-2006-4252 CVE-2008-1637 CVE-2008-3217 CVE-2009-4009 CVE-2009-4010 CVE-2014-3614  +12 more Upstream summary: The recursor in PowerDNS before 3.0.1 allows remote attackers to cause a denial of service (application […]

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

CentOS Stream 9 — postgis — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:4110 Related CVEs: CVE-2026-2003 CVE-2026-2004 CVE-2026-2005 CVE-2026-2006 CVE-2025-12817 CVE-2025-12818 Upstream summary: PostgreSQL is an advanced object-relational database management system (DBMS). Security Fix(es): * postgresql: PostgreSQL missing validation of multibyte character length […]

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Debian 12 — graphicsmagick — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — graphicsmagick — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0981 CVE-2005-0397 CVE-2005-4601 CVE-2006-3743 CVE-2006-3744 CVE-2006-4144 CVE-2006-5456 CVE-2007-0770  +12 more Upstream summary: Buffer overflow in the EXIF parsing routine in ImageMagick before 6.1.0 allows remote attackers to execute […]

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Debian 11 — ntp — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ntp — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0657 CVE-2005-2496 CVE-2009-0021 CVE-2009-0159 CVE-2009-1252 CVE-2009-3563 CVE-2013-5211 CVE-2014-5209  +12 more Upstream summary: Integer overflow in the NTP daemon (NTPd) before 4.0 causes the NTP server to return the […]

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Debian 10 — mutt — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — mutt — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-14093 CVE-2021-3181 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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