Quick answers
- Is CVE-2026-11885 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-11885 being exploited in the wild.
- How severe is CVE-2026-11885?
- High severity, with a CVSS score of 8.4, published 30 July 2026.
- Which products and versions are affected?
- IBM PowerVM Hypervisor FW1110.00 - FW1110.20, FW1060.00 - FW1060.71, FW950.00 - FW950.H1.
- Is there a fix for CVE-2026-11885?
- 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-2026-11885 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2026-11885?
- 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
A classic buffer overflow (CWE-120) exists in the IBM PowerVM Hypervisor due to insufficient size checking during the processing of OS hypervisor calls. A local attacker with low privileges on a guest operating system can trigger this vulnerability by issuing a specially crafted hypervisor call. Successful exploitation can lead to a Denial of Service (DoS) by crashing the hypervisor or result in a compromise of system/OS memory integrity. The vulnerability has been addressed in firmware updates FW1110.30, FW1060.72/FW1060.80, and FW950.H2 depending on the specific Power System hardware generation.
Affected products
- IBM PowerVM Hypervisor FW1110.00 - FW1110.20, FW1060.00 - FW1060.71, FW950.00 - FW950.H1
Timeline
- 2026-07-21: disclosed: Initial publication by IBM
- 2026-07-30: advisory: NVD publication date