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6 vulnerabilities by openbmc
CVE-2026-16141 (GCVE-0-2026-16141)
Vulnerability from nvd – Published: 2026-09-15 13:57 – Updated: 2026-09-15 14:59
VLAI
EPSS
VEX
Title
OpenBMC IPMI Authentication Bypass via Default userKey and Stale Challenge Value
Summary
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.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:59 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/openbmc-ipmi-a… | third-party-advisory |
| https://www.runzero.com/blog/lights-out-exposed/ | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenBMC | phosphor-net-ipmid |
Affected:
0 , ≤ ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361
(git)
|
Date Public
2026-09-15 14:00
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CVE-2026-16140 (GCVE-0-2026-16140)
Vulnerability from nvd – Published: 2026-09-15 13:57 – Updated: 2026-09-15 15:00
VLAI
EPSS
VEX
Title
OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1
Summary
OpenBMC's IPMI implementation, phosphor-net-ipmid, is vulnerable to a logic flaw where the authorization context of an existing session can be replaced with a target account while still maintaining the original integrity and encryption keys. Several downstream vendors implement phosphor-net-ipmid as their IPMI stack, such as NVIDIA and H3C. This issue effectively allows for privilege escalation without re-authentication.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 15:00 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/openbmc-ipmi-p… | third-party-advisory |
| https://www.runzero.com/blog/lights-out-exposed/ | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenBMC | phosphor-net-ipmid |
Affected:
0 , ≤ ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361
(git)
|
Date Public
2026-09-15 14:00
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CVE-2024-41660 (GCVE-0-2024-41660)
Vulnerability from nvd – Published: 2024-07-31 19:37 – Updated: 2024-07-31 20:16
VLAI
EPSS
VEX
Title
slpd-lite unauthenticated memory corruption
Summary
slpd-lite is a unicast SLP UDP server. Any OpenBMC system that includes the slpd-lite package is impacted. Installing this package is the default when building OpenBMC. Nefarious users can send slp packets to the BMC using UDP port 427 to cause memory overflow issues within the slpd-lite daemon on the BMC. Patches will be available in the latest openbmc/slpd-lite repository.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-31 20:14 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/openbmc/slpd-lite/security/adv… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| openbmc | slpd-lite |
Affected:
all
|
|
| openbmc-project | slpd-lite |
Affected:
0 , ≤ *
(custom)
cpe:2.3:a:openbmc-project:slpd-lite:*:*:*:*:*:*:*:* |
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CVE-2026-16141 (GCVE-0-2026-16141)
Vulnerability from cvelistv5 – Published: 2026-09-15 13:57 – Updated: 2026-09-15 14:59
VLAI
EPSS
VEX
Title
OpenBMC IPMI Authentication Bypass via Default userKey and Stale Challenge Value
Summary
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.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:59 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/openbmc-ipmi-a… | third-party-advisory |
| https://www.runzero.com/blog/lights-out-exposed/ | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenBMC | phosphor-net-ipmid |
Affected:
0 , ≤ ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361
(git)
|
Date Public
2026-09-15 14:00
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CVE-2026-16140 (GCVE-0-2026-16140)
Vulnerability from cvelistv5 – Published: 2026-09-15 13:57 – Updated: 2026-09-15 15:00
VLAI
EPSS
VEX
Title
OpenBMC IPMI Privilege Escalation via Retargeted RAKP 1
Summary
OpenBMC's IPMI implementation, phosphor-net-ipmid, is vulnerable to a logic flaw where the authorization context of an existing session can be replaced with a target account while still maintaining the original integrity and encryption keys. Several downstream vendors implement phosphor-net-ipmid as their IPMI stack, such as NVIDIA and H3C. This issue effectively allows for privilege escalation without re-authentication.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 15:00 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.runzero.com/advisories/openbmc-ipmi-p… | third-party-advisory |
| https://www.runzero.com/blog/lights-out-exposed/ | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenBMC | phosphor-net-ipmid |
Affected:
0 , ≤ ba6efc502e6b1fabb8ed1ca677ae5eedd64b6361
(git)
|
Date Public
2026-09-15 14:00
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CVE-2024-41660 (GCVE-0-2024-41660)
Vulnerability from cvelistv5 – Published: 2024-07-31 19:37 – Updated: 2024-07-31 20:16
VLAI
EPSS
VEX
Title
slpd-lite unauthenticated memory corruption
Summary
slpd-lite is a unicast SLP UDP server. Any OpenBMC system that includes the slpd-lite package is impacted. Installing this package is the default when building OpenBMC. Nefarious users can send slp packets to the BMC using UDP port 427 to cause memory overflow issues within the slpd-lite daemon on the BMC. Patches will be available in the latest openbmc/slpd-lite repository.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-31 20:14 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/openbmc/slpd-lite/security/adv… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| openbmc | slpd-lite |
Affected:
all
|
|
| openbmc-project | slpd-lite |
Affected:
0 , ≤ *
(custom)
cpe:2.3:a:openbmc-project:slpd-lite:*:*:*:*:*:*:*:* |
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