CVE-2026-17429 Power System Incorrect Authorization
Attackers with BMC/FSP access can write to hardware registers, gaining full control over the host system and partitions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17429?
CVE-2026-17429 is a high-severity missing authorization vulnerability in IBM Power Systems Firmware, published on 19 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can write arbitrary data to hardware control registers, allowing full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.
Weakness: CWE-863
Which versions are affected by CVE-2026-17429?
It affects 29 products.
Products include Ibm Power Hardware Management Console \(7063-Cr2\) Firmware, Ibm Power System Ac922 \(8335-Gth\) Firmware, Ibm Power System Ac922 \(8335-Gtx\) Firmware, Ibm Power System E1050 \(9043-Mrx\) Firmware, Ibm Power System E1080 \(9080-Hex\) Firmware, Ibm Power System E1150 \(9043-Mru\) Firmware and 23 more.
How do I fix CVE-2026-17429?
No fix has been published for CVE-2026-17429 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-17429 being exploited?
There is no known exploitation of CVE-2026-17429 in the wild and no public exploit code.
Other vulnerabilities in IBM Power Systems Firmware
Sources
Also known as GHSA-p9pw-5q5f-m98j.