{"id":"CVE-2026-16938","aliases":["EUVD-2026-62689","GHSA-v4hv-27x8-h9vq"],"status":"published","title":"Power System Missing Authorization","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.","severity":{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00225,"percentile":0.13244,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-08-19T18:48:32Z","modified":"2026-08-25T15:56:28Z","products":[{"vendor":"ibm","product":"power systems firmware"},{"vendor":"ibm","product":"power_system_e1080_\\(9080-hex\\)_firmware"},{"vendor":"ibm","product":"power_system_e1180_\\(9080-heu\\)_firmware"},{"vendor":"ibm","product":"power_system_e950_\\(9040-mr9\\)_firmware"},{"vendor":"ibm","product":"power_system_e980_\\(9080-m9s\\)_firmware"},{"vendor":"ibm","product":"power_system_h922_\\(9223-22s\\)_firmware"},{"vendor":"ibm","product":"power_system_h924_\\(9223-42s\\)_firmware"},{"vendor":"ibm","product":"power_system_s914_\\(9009-41g\\)_firmware"},{"vendor":"ibm","product":"power_system_s922_\\(9009-22g\\)_firmware"},{"vendor":"ibm","product":"power_system_s924_\\(9009-42g\\)_firmware"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7283896","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16938"},{"url":"https://github.com/advisories/GHSA-v4hv-27x8-h9vq"}],"sources":{"cve":[{"id":"CVE-2026-16938","title":"Power System Missing Authorization","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.","status":"published","published":"2026-08-19T18:48:32.835Z","modified":"2026-08-20T15:26:35.014Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:20:10.870108Z"}],"euvd":[{"id":"EUVD-2026-62689","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.","status":"published","published":"2026-08-19T18:48:32Z","modified":"2026-08-20T15:26:35Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-02T18:01:40.093236Z"}],"ghsa":[{"id":"GHSA-v4hv-27x8-h9vq","title":"IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80,...","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.","status":"published","published":"2026-08-19T21:30:30Z","modified":"2026-08-19T21:30:31Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:10:44.12734Z"}],"nvd":[{"id":"CVE-2026-16938","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.","status":"published","published":"2026-08-19T19:17:10.963Z","modified":"2026-08-25T15:56:28.767Z","cvss":[{"version":"3.1","score":6.9,"vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:39.962615Z"}]}}