CVE-2026-43003

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-01 · updated 2026-10-26
Weakness: CWE-829

Description

An issue was discovered in OpenStack ironic-python-agent 1.0.0 through 11.5.0. Ironic Python Agent (IPA) sometimes executes grub-install from within a chroot of the deployed partition image, leading to code execution in the case of a malicious image.

Affected products

OpenStack Ironic Python Agent: from 1.0.0 through 11.5.0

References

https://bugs.launchpad.net/ironic-python-agent/+bug/2148310
https://github.com/openstack/ironic-python-agent/blob/236b33abffe6688afc39c21e351cc3889b3db2dd/ironic_python_agent/efi_utils.py#L134-L139
http://www.openwall.com/lists/oss-security/2026/06/16/11
https://access.redhat.com/errata/RHSA-2026:51038
https://access.redhat.com/errata/RHSA-2026:57801
https://access.redhat.com/errata/RHSA-2026:60446
https://access.redhat.com/errata/RHSA-2026:60454
https://access.redhat.com/security/cve/CVE-2026-43003
https://bugzilla.redhat.com/show_bug.cgi?id=2464306
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43003.json

Get alerted when CVE-2026-43003 or the next vulnerability affects your stack