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Security News — 1 November 2026

A daily, automatically-compiled digest of the cyber security stories that broke in the last 24 hours, drawn from 5 trusted feeds. Each entry is a short excerpt — follow the link to read the full article at its original publisher. Compiled 1 November 2026 · 13 items.

Top 5 to watch today

  1. Alpine Linux rebuilds GitLab after attempted RCE attack BleepingComputer
  2. CVSS 10.0 LXD, MicroCloud Flaw Lets Attackers Impersonate Trusted Clients Without a Private Key Critical The Hacker News
  3. CVE-2026-120240 — HIGH (CVSS 8.6) High CVEDatabase - Critical CVEs
  4. CVE-2026-120239 — HIGH (CVSS 8.6) High CVEDatabase - Critical CVEs
  5. CVE-2026-120238 — HIGH (CVSS 8.6) High CVEDatabase - Critical CVEs

Urgent Vulnerabilities 4

Actively exploited, critical, or high-severity flaws — patch or mitigate first.

CVEDatabase - Critical CVEs01 Nov

CVE-2026-120240 — HIGH (CVSS 8.6)

HighCVSS 8.6

CVSS 8.6 HIGH A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. This issue affects the function sub_41A748 of the file /bin/ioos of the component WireGuard CLI Group Handler. Executing a manipulation of the argument group_…

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CVEDatabase - Critical CVEs01 Nov

CVE-2026-120239 — HIGH (CVSS 8.6)

HighCVSS 8.6

CVSS 8.6 HIGH A vulnerability was found in WAVLINK WN553X1-B V260403_2.0.0. This vulnerability affects the function sub_419DA8 of the file /bin/ioos of the component WireGuard CLI Handler. Performing a manipulation of the argument file_id…

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CVEDatabase - Critical CVEs01 Nov

CVE-2026-120238 — HIGH (CVSS 8.6)

HighCVSS 8.6
Product
WAVLINK WN553X1-B
Action
Patch when a fix is available; monitor exposure

CVSS 8.6 HIGH A vulnerability has been found in WAVLINK WN553X1-B 260403_2.0.0. This affects the function sub_4162A8 of the file /bin/ioos of the component ovpn_file Handler. Such manipulation of the argument file_id leads to os command in…

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CVEDatabase - Critical CVEs01 Nov

CVE-2026-120231 — HIGH (CVSS 8.6)

HighCVSS 8.6

CVSS 8.6 HIGH A vulnerability was determined in WAVLINK WN553X1-B V260403_2.0.0. The affected element is the function sub_416568 of the file /bin/ioos of the component OpenVPN CLI Handler. This manipulation of the argument file_id causes o…

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Threat Activity 7

Malware, campaigns and adversary tradecraft.

Research & Detection 1

Detection engineering, tooling and defensive analysis.

Policy & Commentary 1

Industry, executive and AI-security perspective.

Daniel Miessler01 Nov

The Post-AI Security Floor

Hand-drawn diagram titled The Post-AI Security Floor with three numbered steps: know everything you have shipped, get it off the open internet, and lean on big vendors instead of small ones/images/post-ai-security-floor-diagram.webp/images…

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