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CriticalActively exploited vulnerabilityOct 29, 2026

Critical Linux Flaw Allows Remote Attackers Full Control of Servers

A severe security vulnerability in the Linux kernel TCP code allows remote attackers without credentials to run commands with full root access on servers. The issue received a near-maximum severity rating of 9.8 out of 10, and working exploit code has already been generated using artificial intelligence. Organizations running affected Linux servers face the threat of complete system takeover if these systems remain unpatched.

Actively exploited vulnerability security briefing

Who is affected

Organizations running servers on Ubuntu, Red Hat Enterprise Linux, or other Linux distributions using vulnerable kernel versions are affected.

How to mitigate it

  1. 1Identify all servers and cloud instances running Ubuntu, Red Hat Enterprise Linux, or other Linux distributions.
  2. 2Apply the latest kernel security updates from your operating system vendor as soon as they are released.
  3. 3Restrict external network access to Linux servers by limiting open TCP ports with firewalls.

How Outsource IT solves this

Managed IT Services delivers proactive patching and security management to ensure critical operating system updates are applied swiftly across all servers.

Managed IT Services

Tags

LinuxVulnerabilityPatchingCybersecurity

Source advisory: the-hacker-news

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