Quick answers
- Is CVE-2026-17504 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17504 being exploited in the wild.
- How severe is CVE-2026-17504?
- Medium severity, with a CVSS score of 5.1, published 24 September 2026.
- Which products and versions are affected?
- IBM PowerVM Hypervisor FW1120.00-FW1120.01, FW1110.00-FW1110.31, FW1060.00-FW1060.81, FW950.00-FW950.H3.
- Is there a fix for CVE-2026-17504?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-17504 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-17504?
- Check whether you run IBM PowerVM Hypervisor 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
An integer underflow vulnerability (CWE-191) in the partition firmware runtime allows an authenticated local attacker with root/administrator privileges to craft a malicious request that causes memory corruption and firmware crash. Attack requires root access to a partition and local network access to the firmware runtime. The vulnerability results in denial of service and potential memory corruption within the partition firmware.
Affected products
- IBM PowerVM Hypervisor FW1120.00-FW1120.01, FW1110.00-FW1110.31, FW1060.00-FW1060.81, FW950.00-FW950.H3
Timeline
- 2026-09-24: disclosed