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CVE-2026-12943

9.8 · CRITICAL

IBM HMC V10.3.1050.0 through 10.3.1064.0 and IBM HMC V11.1.1110.0 through 11.1.1112.0 Management systems in IBM Power environments (HMC and Novalink) could allow an unauthenticated user to execute…

Published Jul 30, 2026CWE-78EPSS 0.76%

Overview

CVE-2026-12943 is a critical-severity vulnerability. It was published on July 30, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

IBM HMC V10.3.1050.0 through 10.3.1064.0 and IBM HMC V11.1.1110.0 through 11.1.1112.0 Management systems in IBM Power environments (HMC and Novalink) could allow an unauthenticated user to execute arbitrary commands with elevated privileges on the system due to improper validation of user supplied input.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.ibm.com/support/pages/node/7278667

How CyberStrike helps

Frequently asked questions

What is CVE-2026-12943?

CVE-2026-12943 is a critical-severity vulnerability. It was published on July 30, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-12943?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-12943?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-12943?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-12943 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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