CVE-2026-12943
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Unauthenticated Command Execution in IBM Power HMC

Publication date: 2026-07-30

Last updated on: 2026-07-30

Assigner: IBM Corporation

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.

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Meta Information

Published
2026-07-30
Last Modified
2026-07-30
Generated
2026-07-31
AI Q&A
2026-07-31
EPSS Evaluated
N/A
NVD
CVE-2026-12943
EUVD
EUVD-2026-51260

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
ibm hmc From 10.3.1050.0 (inc) to 10.3.1064.0 (inc)
ibm hmc From 11.1.1110.0 (inc) to 11.1.1112.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

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Executive Summary

This vulnerability allows an unauthenticated user to execute arbitrary commands with elevated privileges on IBM HMC and Novalink systems due to improper input validation. It affects IBM HMC versions V10.3.1050.0 through 10.3.1064.0 and V11.1.1110.0 through 11.1.1112.0.

Impact Analysis

An attacker could gain full control of the IBM HMC or Novalink system, potentially leading to unauthorized access, data theft, system manipulation, or disruption of critical operations in IBM Power environments.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating compliance requirements such as GDPR (data protection) and HIPAA (healthcare data security), potentially resulting in legal penalties and reputational damage.

Mitigation Strategies

Apply the latest IBM HMC firmware update provided by IBM to patch the improper input validation flaw. Isolate affected systems from untrusted networks until patched. Monitor IBM security advisories for updates and verify patch installation.

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