CVE-2021-39296 json
In OpenBMC 2.9, crafted IPMI messages allow an attacker to bypass authentication and gain full control of the system.
published 5y ago modified 4mo ago also EUVD-2021-25657
- cvss
- 10.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.0%
- EPSS 3.0% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
In OpenBMC 2.9, crafted IPMI messages allow an attacker to bypass authentication and gain full control of the system.
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Check with FencerExploit prediction
3.04% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/google/security-research/security/advisories/GHSA-gg9x-v835-m48q referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/google/security-research/security/advisories/GHSA-gg9x-v835-m48q
exploit, third-party-advisory
-
github.com
/openbmc/openbmc
third-party-advisory
- intel.com /content/www/us/en/security-center/advisory/intel-sa-00737.html
Sources
- CVE List CVE-2021-39296
- NVD CVE-2021-39296
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.