Security Hardening

Amazon Linux 2023 — java-11-amazon-corretto — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — java-11-amazon-corretto — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • April 12, 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 ALAS2023-2026-1685 Related CVEs: CVE-2026-22007 CVE-2026-22013 CVE-2026-22016 CVE-2026-22018 CVE-2026-22021 CVE-2026-34268 CVE-2026-34282 CVE-2026-21925  +12 more Upstream summary: Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product […]

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Windows Server 2022 — KB5087068 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5087068 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5087068 • MSRC update-guide entry Related CVEs: CVE-2026-32177 CVE-2026-35433 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 Microsoft summary: Heap-based buffer overflow in .NET allows an unauthorized attacker […]

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

Debian 13 — rust-coreutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • April 12, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 April 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-35338 CVE-2026-35339 CVE-2026-35340 CVE-2026-35341 CVE-2026-35342 CVE-2026-35343 CVE-2026-35344 CVE-2026-35345  +12 more Upstream summary: A vulnerability in the chmod utility of uutils coreutils allows users to bypass the –preserve-root safety […]

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

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

  • April 12, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 April 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-0038 CVE-2005-0428 CVE-2005-2301 CVE-2005-2302 CVE-2006-4251 CVE-2008-3337 CVE-2008-5277 CVE-2012-0206  +12 more Upstream summary: The DNS implementation of PowerDNS 2.9.16 and earlier allows remote attackers to cause a denial of […]

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Debian 13 — jetty12 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — jetty12 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • April 12, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 12 April 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-11143 CVE-2025-1948 CVE-2025-5115 CVE-2026-1605 CVE-2026-2332 CVE-2026-5795 Upstream summary: The Jetty URI parser has some key differences to other common parsers when evaluating invalid or unusual URIs. Differential parsing of […]

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NetBSD 9.4 — libcupsfilters — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — libcupsfilters — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 12, 2026
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-57812 CVE-2025-64503 Upstream summary: pkgsrc audit-packages flagged libcupsfilters<2.1.1 for vulnerability class 'out-of-bounds-write'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-57812 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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Debian 11 — python-asteval — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-asteval — vulnerability — patch and remediation guide

  • April 12, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 12 April 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-24359 Upstream summary: ASTEVAL is an evaluator of Python expressions and statements. Prior to version 1.0.6, if an attacker can control the input to the `asteval` library, they […]

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openSUSE Tumbleweed — libixml11 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libixml11 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • April 12, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2021-29462 CVE-2026-41682 CVE-2016-6255 CVE-2016-8863 CVE-2021-28302 Upstream summary: The Portable SDK for UPnP Devices is an SDK for development of UPnP device and control point applications. The server part of […]

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

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

  • April 12, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 12 April 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0050 CVE-2015-1783 CVE-2021-28091 CVE-2025-46404 CVE-2025-46705 CVE-2025-46784 CVE-2025-47151 Upstream summary: Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote […]

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

Debian 12 — smartdns — vulnerability — patch and remediation guide

  • April 12, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 12 April 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-1425 Upstream summary: A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component […]

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