Security Hardening

Debian 13 — jupyter-core — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — jupyter-core — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 June 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-39286 Upstream summary: Jupyter Core is a package for the core common functionality of Jupyter projects. Jupyter Core prior to version 4.11.2 contains an arbitrary code execution vulnerability in […]

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Windows Server 2019 — KB5066742 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5066742 — security update — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5066742 • MSRC update-guide entry Related CVEs: CVE-2025-55248 Affected components: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 Microsoft summary: Inadequate encryption strength in .NET.NET Framework, Visual Studio allows an […]

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

Debian 13 — gri — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 June 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-7291 Upstream summary: gri before 2.12.18 generates temporary files in an insecure way. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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

Debian 13 — ulfius — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 June 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-40540 Upstream summary: ulfius_uri_logger in Ulfius HTTP Framework before 2.7.4 omits con_info initialization and a con_info->request NULL check for certain malformed HTTP requests. Table of contents Symptom & Impact […]

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Debian 12 — munge — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — munge — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 June 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-25506 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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openSUSE Tumbleweed — openvpn — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — openvpn — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2023-46850 CVE-2022-0547 CVE-2017-7521 CVE-2017-7522 CVE-2025-2704 CVE-2024-5594 CVE-2024-28882 CVE-2023-46849  +9 more Upstream summary: Use after free in OpenVPN version 2.6.0 to 2.6.6 may lead to undefined […]

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Debian 13 — atril — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — atril — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 June 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1000083 CVE-2017-1000159 CVE-2019-1010006 CVE-2019-11459 CVE-2023-51698 CVE-2023-52076 CVE-2026-46529 Upstream summary: backend/comics/comics-document.c (aka the comic book backend) in GNOME Evince before 3.24.1 allows remote attackers to execute arbitrary commands via […]

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Debian 13 — junit4 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — junit4 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 June 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15250 Upstream summary: In JUnit4 from version 4.7 and before 4.13.1, the test rule TemporaryFolder contains a local information disclosure vulnerability. On Unix like systems, the system's temporary directory […]

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Ubuntu 16.04 — roundcube — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — roundcube — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 June 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8223-1 Related CVEs: CVE-2024-38357 CVE-2024-38356 CVE-2024-42008 CVE-2024-42010 CVE-2026-26079 CVE-2026-25916 CVE-2019-15237 CVE-2017-8114  +12 more Upstream summary: It was discovered that Roundcube Webmail mishandled Punycode xn-- domain names. An attacker could possibly […]

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openSUSE Tumbleweed — perl-YAML-Syck — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — perl-YAML-Syck — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory RHSA-2026:6470 (see also SUSE bugzilla) Related CVEs: CVE-2026-4177 CVE-2026-5089 CVE-2025-11683 Upstream summary: YAML::Syck versions through 1.36 for Perl has several potential security vulnerabilities including a high-severity heap buffer overflow in the YAML […]

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