Low severity · published Oct 2, 2026
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
3.6
CVSS
0.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack vector
Local
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
Simulink · MathWorks
before R2026b · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105043
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105043
www.mathworks.com
https://www.mathworks.com/products/simulink.html
alexanderboll.dev
https://alexanderboll.dev/disclosures/simulink-vulnerability-concealed-blocks/
www.mathworks.com
https://www.mathworks.com/help/simulink/release-notes.html#mw_81eb54b6-4dfa-42c1-8c3c-e998eff5a8cd