CVE-2025-8762: INSTAR 2K+/4K UART improper physical access control

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-08-13 · updated 2026-06-17
Weakness: CWE-284

Description

A vulnerability was found in INSTAR 2K+ and 4K 3.11.1 Build 1124. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper physical access control. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used.

Affected products

INSTAR 2K+: 3.11.1 Build 1124
INSTAR 4K: 3.11.1 Build 1124

References

https://modzero.com/static/MZ-25-03_modzero_INSTAR.pdf
https://vuldb.com/?ctiid.319865
https://vuldb.com/?id.319865

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