Medium severity · published Aug 19, 2026
CVE-2026-18681
This Power System Buffer Overflow
6.8
CVSS
0.3%
EPSS
No
On KEV
Description
IBM Server Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP firmware update process. An attacker with authenticated administrator-level access to the FSP can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SF
Server Firmware · IBM
FW1120.00; FW1110.00 through FW1110.30; FW1060.00 through FW1060.80; FW950.00 through FW950.H2 · source: vendor
PS
Power System E1080 (9080-hex) Firmware · Ibm
fw1060.00 before fw1060.81 · source: NVD
PS
Power System E1180 (9080-heu) Firmware · Ibm
fw1110.00 before fw1110.31; fw1120.00 · source: NVD
PS
Power System E950 (9040-mr9) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
PS
Power System E980 (9080-m9s) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
PS
Power System H922 (9223-22s) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
PS
Power System H924 (9223-42s) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
PS
Power System S914 (9009-41g) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
PS
Power System S922 (9009-22g) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
PS
Power System S924 (9009-42g) Firmware · Ibm
fw950.00 before fw950.h3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18681
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18681
Vendor Advisory
https://www.ibm.com/support/pages/node/7283899
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