Arbitrary Code Exec via BMC Firmware Update in IBM OpenBMC (FW1060)
CVE-2026-18849 Published on August 19, 2026
IBM OpenBMC Code Execution
IBM OpenBMC FW1060.00 through FW1060.80 is affected by a vulnerability in the BMC firmware update process. An attacker with authenticated administrator-level access to the BMC can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.
Vulnerability Analysis
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-18849 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-18849
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Affected Versions
IBM OPENBMC:- Version FW1060.00, <= FW1060.80 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.