CVE-2026-18857 json
This Power System update is being released to address
published 2026-09-24 46 d ago modified 2026-09-30 39 d ago also EUVD-2026-85893
- cvss
- 3.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 1%
- public exploits
- 0
- none known
Summary
IBM OPENBMC FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the BMC firmware management interface. The host system can cause the BMC firmware management service to crash or allow a limited amount of BMC internal memory to be read, resulting in a confidentiality and availability impact to the managed system.
Patch / fix
- ibm power_system_s1122_(9824-22a)_firmware fw1110.32, fw1120.02
- ibm power_system_s1124_(9824-42a)_firmware fw1110.32, fw1120.02
- ibm power_system_s1122s_(9824-22b)_firmware fw1110.32, fw1120.02
- ibm power_system_s1114_(9824-41b)_firmware fw1110.32, fw1120.02
- ibm power_system_l1122_(9856-22h)_firmware fw1110.32, fw1120.02
- ibm power_system_l1124_(9856-42h)_firmware fw1110.32, fw1120.02
- ibm power_system_e1150_(9043-mru)_firmware fw1110.32, fw1120.02
- ibm power_system_s1112_(9242-21b)_firmware fw1120.02
- ibm power_system_s1112_(9242-21t)_firmware fw1120.02
- ibm power_system_s1022_(9105-22a)_firmware fw1060.82
- ibm power_system_s1024_(9105-42a)_firmware fw1060.82
- ibm power_system_s1022s_(9105-22b)_firmware fw1060.82
- ibm power_system_s1014_(9105-41b)_firmware fw1060.82
- ibm power_system_l1022_(9786-22h)_firmware fw1060.82
- ibm power_system_l1024_(9786-42h)_firmware fw1060.82
- ibm power_system_e1050_(9043-mrx)_firmware fw1060.82
- ibm power_system_s1012_(9028-21b)_firmware fw1060.82
- ibm.com/support/pages/node/7289253 advisory
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 46 d ago
Exploit prediction
0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.4 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:L |
Affected products
- IBM OPENBMC
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
ibm.com
/support/pages/node/7289253
vendor-advisory, patch
Sources
- CVE List CVE-2026-18857
- NVD CVE-2026-18857
Fencer Vulns 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.