Zero Radar
← feed
CriticalVulnerabilityCVE-2026-18450updated 27 Oct 2026, 11:17 UTC

BMC firmware lets attackers run commands over IPMI sessions

A server's management controller can be tricked into running commands from an attacker over its remote-management network protocol. An attacker who gets this access could take control of the machine.

Official, 2 sources
SeverityCriticalCVSS 9.8 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

The baseboard management controller (BMC) does not correctly enforce integrity and encryption requirements for IPMI commands, allowing crafted packets to execute arbitrary commands within an active session.

Why it is dangerous: An attacker who can reach the BMC's IPMI interface could execute arbitrary commands on the management controller, potentially gaining full control of the server hardware. Servers with exposed or poorly segmented management networks are most at risk.

Are you affected?

You are affected if you run a server or device with a vulnerable BMC firmware and its IPMI interface is reachable from networks you do not fully trust.

unknown

What to do

  1. Check your vendor's security advisories for a BMC firmware update that addresses this issue and apply it
  2. Restrict access to the BMC/IPMI management network so only trusted administrators can reach it
  3. Disable IPMI over LAN on systems where you do not need remote IPMI access

Timeline

  1. 27 Oct 2026, 08:16 UTC
    Publicly disclosed
  2. 27 Oct 2026, 08:16 UTC
    Reported by NVD · NVD
  3. 27 Oct 2026, 08:22 UTC
    Picked up by Zero Radar
  4. 27 Oct 2026, 11:17 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-18450 · GHSA-4gmh-3v9m-9469
CVSS
9.8 / 10
EPSS
0.4% chance of exploitation within 30 days
Disclosed
27 Oct 2026, 08:16 UTC
On Zero Radar
27 Oct 2026, 08:22 UTC (5 min after disclosure)
Last change
27 Oct 2026, 11:17 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

BMC firmware lets attackers run commands over IPMI sessions · Zero Radar