CVE-2026-12943: 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 IB

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-12943 is a critical-severity flaw (CVSS 9.8) affecting hardware management console. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-07-30
Last modified	2026-08-10

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-08-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-30 19:17 UTCPublished CVE record published
2026-08-10 20:05 UTCUpdated Record last modified

ibm hardware management console UPGRADE

Affected: >= 10.3.1050.0 and < 10.3.1064.1 · >= 11.1.1110.0 and < 11.1.1112.1

Fixed in: 10.3.1064.1, 11.1.1112.1

Safe to downgrade to: a release before 10.3.1050.0

1. Check installed version

apt-cache policy hardware-management-console || rpm -q hardware-management-console || hardware-management-console --version

2. UPGRADE to 10.3.1064.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade hardware-management-console

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hardware-management-console

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 10.3.1050.0 (Debian / Ubuntu)

apt-cache madison hardware-management-console sudo apt install hardware-management-console=<VERSION_BEFORE_10.3.1050.0> sudo apt-mark hold hardware-management-console

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list hardware-management-console sudo dnf downgrade hardware-management-console-<VERSION_BEFORE_10.3.1050.0> sudo dnf versionlock add hardware-management-console

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-12943?

hardware management console: upgrade to 10.3.1064.1, 11.1.1112.1. Exact commands for each OS are on this page.

Is CVE-2026-12943 being exploited?

CVE-2026-12943 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-12943 affect?

CVE-2026-12943 affects hardware management console. Severity is critical (CVSS 9.8). 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

How urgent is CVE-2026-12943?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

References

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