What is CVE-2026-105043?

CVE-2026-105043 is a low-severity vulnerability in Mathworks Simulink, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 3.6/10. Published 2026-10-02.

How severe is CVE-2026-105043?

Low severity. CVSS v3 base score is 3.6 out of 10.

Vulnerability in Mathworks Simulink

CVE-2026-105043

MathWorks Simulink before R2026b, when showing a crafted .slx file, can have blocks that are never visible in the Simulink Editor but will cause code execution.

Published 2026-10-02.

CVSS v3 metric

CVSS v3 base score 3.6 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Mathworks Simulink

Weakness classification (CWE)

CWE-451 — User Interface (UI) Misrepresentation of Critical Information

References

www.mathworks.com/products/simulink.html
alexanderboll.dev/disclosures/simulink-vulnerability-concealed-blocks/
www.mathworks.com/help/simulink/release-notes.html

Frequently asked questions

What is CVE-2026-105043?: CVE-2026-105043 is a low-severity vulnerability in Mathworks Simulink, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 3.6/10. Published 2026-10-02.
How severe is CVE-2026-105043?: Low severity. CVSS v3 base score is 3.6 out of 10.