Quick answers
- Is CVE-2026-17494 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17494 being exploited in the wild.
- How severe is CVE-2026-17494?
- High severity, with a CVSS score of 8.2, published 19 August 2026.
- Which products and versions are affected?
- IBM Power Systems Firmware FW1110.00 through FW1110.30, FW1120.00.
- Is there a fix for CVE-2026-17494?
- A patch was published on 2026-08-19: Patches released: FW1110.31 and FW1120.01 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-17494 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-17494?
- Check whether you run IBM Power Systems Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A stack-based buffer overflow (CWE-121) exists in the BMC-to-host interface of affected IBM Power Systems firmware versions. The vulnerability is triggered when an attacker with BMC service access sends a specially crafted command to the interface, causing a buffer overflow that permits arbitrary code execution on the host system. The attack requires high privileges (service/administrative access to the BMC) but no user interaction. Successful exploitation grants the attacker complete control of the host OS and all virtualized partitions running on it. Patches are available: FW1110.31 or newer, or FW1120.01 or newer, depending on the specific system model.
Affected products
- IBM Power Systems Firmware FW1110.00 through FW1110.30, FW1120.00
Timeline
- 2026-08-15: disclosed
- 2026-08-19: patched: Patches released: FW1110.31 and FW1120.01