Vulnerability · Published Aug 19, 2026 · Assigned by ibm

CVE-2026-17494Power System Buffer Overflow

High 8.2

In plain English

A high-severity stack buffer overflow in Power Systems Firmware from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.2%top 93.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

IBM Power Systems Firmware FW1120.00, and FW1110.00 through FW1110.30 is affected by a vulnerability in the interface between the BMC and the host system. An attacker with service access to the BMC can send a specially crafted command, allowing arbitrary code to be executed on the host system, giving full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.

Affected products (as reported)

Vendor	Product	Versions
IBM	Power Systems Firmware	FW1120.00FW1110.00 – through FW1110.30

Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

https://www.ibm.com/support/pages/node/7283220 vendor-advisory, patch