CVE-2026-16938
Low
No strong exploitation signal.
CVSS base
6.9
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
EPSS — probability of exploitation (30 days)
0.1%
3.5th percentile
CISA KEV
Not listed
Weakness / dates
CWE-862
Published 2026-08-19 · modified 2026-08-25
CVSS breakdown
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
| Attack Vector | A | Adjacent |
| Attack Complexity | L | Low |
| Privileges Required | H | High |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | N | None |
| Integrity | L | Low |
| Availability | H | High |
Timeline
- 2026-08-19 — Published (NVD)
- 2026-08-25 — Last modified (NVD)
Description
IBM Power Systems 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 access controls over privileged system configuration operations on the FSP. An attacker with authenticated administrator-level access to the FSP can place the managed system into a non-production operational mode, allowing certain system components to be disabled. This condition persists across FSP resets and requires explicit operator intervention — clearing the affected configuration — to restore normal operation. Successful exploitation results in an availability impact to the managed system.