CVE-2026-16938
Power System Missing Authorization
No known exploitation. EPSS puts it in the 12th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 12th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
15 events over 6 days, from the signal feeds we watch.
- Patch availableworkaround available, record updated
- Patch availablepatch available, workaround available, workaround available, record updated, record updated
- Patch availableworkaround available, published, weakness classified, att&ck mapped, record updated
Affected products
- power system e1080 \(9080-hex\) firmwareHardware Firmware / cpu-gpu
- power system e1180 \(9080-heu\) firmwareEnterprise Software / itsm-monitoring
- power system s922 \(9009-22g\) firmwareHardware Firmware
- power system h922 \(9223-22s\) firmwareHardware Firmware / cpu-gpu
- power system s914 \(9009-41g\) firmwareHardware Firmware
- power system s924 \(9009-42g\) firmwareHardware Firmware
- power system h924 \(9223-42s\) firmwareHardware Firmware / cpu-gpu
- power system e950 \(9040-mr9\) firmwareHardware Firmware / cpu-gpu
And 2 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
Scored 6.9 by NVD.
How it is reached
- Attack Vector AdjacentRequires access to the local network (e.g. same Wi-Fi, Bluetooth)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required HighRequires admin or elevated privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity LowData modification is possible but limited in scope or consequence
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
References in the record
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