CVE-2026-16835
Power System Improper Certificate Validation
02 Description
Power System Improper Certificate Validation
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.36% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 29.4% of scored records. A rank, not a probability.
- NVD base score
- 9.6 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-08-25.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-08-19 18:52Z2 MO AGO
- Last updated
- 2026-08-22 03:56Z2 MO AGO
- Reserved
- 2026-07-24
- Assigning CNA
- ibm
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.6)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-295Improper Certificate ValidationBase
- Data version
- 5.2
- Document digest
- f9f5ddea49494469cb4190e18853a4c06c54e85affbae37159656657c9e04261
05 Affected products
06 References
07 Remediation
IBM strongly recommends customers with the products below install FW1120.01(1120_167), FW1110.31(1110_134) or newer to remediate this vulnerability as soon as possible. Power 11 1) IBM Power System E1180 (9080-HEU) IBM strongly recommends customers with the products below install FW1060.81(1060_184) or newer to remediate this vulnerability as soon as possible. Power 10 1) IBM Power System E1080 (9080-HEX) IBM strongly recommends customers with the products below install FW950.H3(950_230) or newer to remediate this vulnerability as soon as possible. Power 9 1) IBM Power System S922 (9009-22G) 2) IBM Power System H922 (9223-22S) 3) IBM Power System S914 (9009-41G) 4) IBM Power System S924 (9009-42G) 5) IBM Power System H924 (9223-42S) 6) IBM Power System E950 (9040-MR9) 7) IBM Power System E980 (9080-M9S) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/