Quick answers
- Is CVE-2026-96261 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-96261 being exploited in the wild.
- How severe is CVE-2026-96261?
- High severity, with a CVSS score of 7.3, published 12 October 2026.
- Which products and versions are affected?
- IBM PowerVM Hypervisor FW1060.00 through FW1060.81.
- Is there a fix for CVE-2026-96261?
- Yes: fixed in FW1060.82 (1060_199) or newer. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-96261 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-96261?
- 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.
How to fix
- Fixed in: FW1060.82 (1060_199) or newer
Technical details
A stack-based buffer overflow (CWE-121) exists in the PowerVM Hypervisor firmware's host firmware configuration parsing logic. An authenticated attacker with service-level access to the service processor can supply malformed configuration data that overflows a stack buffer during system initialization, causing firmware boot crashes and potential memory corruption. The attack requires local access and authenticated credentials but impacts system integrity and availability.
Affected products
- IBM PowerVM Hypervisor FW1060.00 through FW1060.81
Timeline
- 2026-09-30: disclosed