CVE-2026-43003

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.

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CVSS v3.1 Score

8.0

HIGH

CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0005

Probability of exploitation

0.14%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-829 CWE-829

Affected Products

Vendor	Product	Versions
openstack	ironic_python_agent	1.0.0 — 11.5.0

References

Other 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

Frequently Asked Questions

What is CVE-2026-43003? +

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. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2026-43003? +

CVE-2026-43003 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0005, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-43003? +

CVE-2026-43003 affects products from openstack, specifically: ironic_python_agent. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-43003? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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