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CriticalVulnerabilityCVE-2026-43836updated 25 Oct 2026, 15:20 UTC

Network packet flaw lets attackers run commands with full system rights

A flaw in this software could let an attacker send a specially crafted network packet that makes the system run commands the attacker chose, with the highest level of access. Anyone reachable over the network may be able to take control.

Official, 2 sources
SeverityCriticalCVSS 9.3 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

What happened

A flaw in packet handling allows forged packets to trigger arbitrary command execution with maximum privileges. The exact affected component and product name are not stated in the provided material.

Why it is dangerous: An attacker who can send packets to a vulnerable system could gain full control of it without logging in, which may expose all data and services on that machine.

Are you affected?

You are affected if you run the vulnerable product version described in the NVD and GitHub advisories for CVE-2026-43836 and it is reachable from a network the attacker can reach.

What to do

  1. Check the NVD entry and GitHub advisory GHSA-7wv5-vcx2-7h34 for the affected product and versions
  2. Identify whether your systems run the affected software and whether it is reachable from untrusted networks
  3. Apply the vendor's patch or update as soon as it is available, or restrict network access to the service in the meantime

Timeline

  1. 20 Oct 2026, 09:17 UTC
    Publicly disclosed
  2. 20 Oct 2026, 09:17 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 15:20 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-43836 · GHSA-7wv5-vcx2-7h34
CVSS
9.3 / 10
EPSS
0.9% chance of exploitation within 30 days
Disclosed
20 Oct 2026, 09:17 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 15:20 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Network packet flaw lets attackers run commands with full system rights · Zero Radar