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3.4

IBM OpenBMC firmware can crash or expose data

CVE-2026-18857 · published 25 days ago
Summary

Certain versions of IBM OpenBMC firmware let a connected server cause the management software to stop working or reveal a small amount of internal memory. This could lead to temporary loss of control over the server or limited data leakage. Apply the latest OpenBMC firmware update to eliminate the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ibm openbmc <= FW1120.01
Original advisory text
This Power System update is being released to address
IBM OPENBMC FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the BMC firmware management interface. The host system can cause the BMC firmware management service to crash or allow a limited amount of BMC internal memory to be read, resulting in a confidentiality and availability impact to the managed system.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
3.4 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-125Out-of-bounds Read
Timeline
Published24 Sep 2026
Updated26 Sep 2026
First seen24 Sep 2026
Sources
CVE-2026-18857 · NVD
CVE-2026-18857 · MITRE
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