Is CVE-2026-17093 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-17093 being exploited in the wild.

How severe is CVE-2026-17093?

High severity, with a CVSS score of 8.2, published 19 August 2026.

Which products and versions are affected?

IBM Power Systems Firmware FW1120.00, FW1110.00–FW1110.30, FW1060.00–FW1060.80, FW950.00–FW950.H2, OP940.00–OP940.a1 (Power 9), OP940.00–OP940.81 (Power HMC).

Is there a fix for CVE-2026-17093?

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-2026-17093 attacked?

It is attacked with local access, in device firmware.

Am I affected by CVE-2026-17093?

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.

CVE-2026-17093: IBM Power Systems Firmware buffer overflow in configuration parsing

CVE-2026-17093 · Severity: high · CVSS 8.2 · Published 2026-08-19

IBM Power Systems firmware contains a stack-based buffer overflow vulnerability in its host firmware configuration parsing logic. An attacker with service-level administrative access to the system's baseboard management controller (BMC) or service processor can exploit this flaw by supplying malicious configuration data, compromising the firmware boot process and gaining control over the entire system, with potential impact to confidentiality, integrity, and availability.

Technologies: IBM Power Systems Firmware. Vendors: IBM.

Quick answers

Is CVE-2026-17093 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-17093 being exploited in the wild.
How severe is CVE-2026-17093?: High severity, with a CVSS score of 8.2, published 19 August 2026.
Which products and versions are affected?: IBM Power Systems Firmware FW1120.00, FW1110.00–FW1110.30, FW1060.00–FW1060.80, FW950.00–FW950.H2, OP940.00–OP940.a1 (Power 9), OP940.00–OP940.81 (Power HMC).
Is there a fix for CVE-2026-17093?: 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-2026-17093 attacked?: It is attacked with local access, in device firmware.
Am I affected by CVE-2026-17093?: 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

The vulnerability is a stack-based buffer overflow (CWE-121) in the host firmware configuration parsing component of IBM Power Systems firmware. An attacker with service-level access to the BMC/FSP (Flexible Service Processor) can provide specially crafted configuration data that overflows internal buffers during parsing, compromising the host firmware boot stage and all subsequently loaded components. The attack requires elevated (service-level) privileges on the BMC/FSP but no user interaction. Successful exploitation results in complete system compromise affecting confidentiality, integrity, and availability. Patches are available for affected versions across Power 9, Power 10, and Power 11 systems.

Affected products

IBM Power Systems Firmware FW1120.00, FW1110.00–FW1110.30, FW1060.00–FW1060.80, FW950.00–FW950.H2, OP940.00–OP940.a1 (Power 9), OP940.00–OP940.81 (Power HMC)

Timeline

2026-08-19: disclosed
2026-08-15: advisory: IBM Security Bulletin initial publication

References

https://www.ibm.com/support/pages/node/7283239

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