CVE-2026-16141

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Source
https://cve.org/CVERecord?id=CVE-2026-16141
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16141.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-16141
Published
2026-09-15T13:57:28Z
Modified
2026-10-08T02:49:21Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
OpenBMC IPMI Authentication Bypass via Default userKey and Stale Challenge Value
Details

OpenBMC's IPMI implementation, phosphor-net-ipmid, contains a logic flaw in which an unauthenticated client can force the RAKP Message 1 handler to return before it overwrites the authentication object's constructor defaults. The IPMI service then accepts a RAKP Message 3 whose HMAC is computed with the constant 20-byte 'userKey' initialized from the string '0penBmc' and an often-predictable 'bmcRandomNum'. Several downstream vendors implement phosphor-net-ipmid as their IPMI stack, such as NVIDIA and H3C.

Database specific 
{
    "cna_assigner": "runZero",
    "cwe_ids": [
        "CWE-457",
        "CWE-798"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/16xxx/CVE-2026-16141.json"
}
References

Affected packages

Git / github.com/openbmc/phosphor-net-ipmid

Affected ranges

Type
GIT
Repo
https://github.com/openbmc/phosphor-net-ipmid
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-16141.json"