In OpenBMC 2.9, crafted IPMI messages allow an attacker to cause a denial of service to…
Priority HIGH 72CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.
Summary
In OpenBMC 2.9, crafted IPMI messages allow an attacker to cause a denial of service to the BMC via the netipmid (IPMI lan+) interface.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01282 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openbmc-project:openbmc:2.9.0:-:*:*:*:*:*:* | 2.9.0 | Vulnerable | OpenBMC Project |
- cpe:2.3:a:openbmc-project:openbmc:2.9.0:-:*:*:*:*:*:* Versions 2.9.0 Vulnerable ·OpenBMC Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-39295
- 2026-10-03 Alias added: GHSA-8gg3-qvw7-qmgm
References
More OpenBMC Project Openbmc vulnerabilities
- TI-2021-16669 In OpenBMC 2.9, crafted IPMI messages allow an attacker to bypass authentication and gain full control of the system. CVSS 3.1CRITICAL 10.0
- TI-2022-03149 Unauthenticated out of bounds stack write in bmcweb CVSS 3.1HIGH 8.2
- TI-2022-02604 Unauthenticated out of bounds heap write in bmcweb CVSS 3.1HIGH 8.2
- TI-2020-11083 user_channel/passwd_mgr.cpp in OpenBMC phosphor-host-ipmid before 2020-04-03 does not… CVSS 3.1HIGH 8.8
- TI-2022-16175 Out-of-bounds read in OpenBMC CVSS 3.1HIGH 7.5
Sources
- CVE-2021-39295 · CVE Program
- CVE-2021-39295 · NVD
- FIRST EPSS
- GHSA-8gg3-qvw7-qmgm · GitHub Advisory Database · CC BY 4.0
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