Is CVE-2026-43003 in the CISA KEV catalog?

No. CVE-2026-43003 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-43003?

CVE-2026-43003 has a CVSS v3 base score of 8.0 (HIGH).

What is the EPSS score for CVE-2026-43003?

CVE-2026-43003 has an EPSS score of 0.84% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-43003?

Upgrade ironic on debian unstable to 1:35.0.1-7 or later.

CVE & CISA-KEV Catalog

CVE-2026-43003

HIGH

8.0

CVSS v3

NVD

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.

CWE-829 CWE-78OS Command Injection

How to fix

Remediation Available

ironicDebian

Fixed in:1:35.0.1-7CVE-2026-43003

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.84%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Issue Tracking1

bugs.launchpad.net

Product1

github.com

Other references4

Related Vulnerabilities

Other CWE-829 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-17246	Critical	9.8	82%	-	Fix
CVE-2024-5762	High	8.1	72%	-	-
CVE-2018-7422	High	7.5	63%	-	-
CVE-2023-2249	High	8.8	61%	-	-
CVE-2025-32463	Critical	9.3	48%	KEV	Fix
CVE-2024-38476	Critical	9.8	42%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.