Vulnerability · Published Dec 25, 2025 · Assigned by VulDB

CVE-2025-15083TOZED ZLT M30s UART on-chip debug and test interface with improper access control

Low 2.0

In plain English

A low-severity security flaw in ZLT M30s from TOZED. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)2.0Low

Exploit odds (30 days)0.3%top 81.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in TOZED ZLT M30s up to 1.47. The affected element is an unknown function of the component UART Interface. Executing manipulation can lead to on-chip debug and test interface with improper access control. The physical device can be targeted for the attack. Attacks of this nature are highly complex. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
TOZED	ZLT M30s	1.01.11.21.31.41.51.61.7

Weakness: CWE-1191 · Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R

References

VDB-338411 | TOZED ZLT M30s UART on-chip debug and test interface with improper access control vdb-entry
VDB-338411 | CTI Indicators (IOB, IOC) signature, permissions-required
Submit #707974 | TOZED ZLT M30s 1.47 Improper Access Control in Debug Interface third-party-advisory
https://hacklab.eu.org/blogs/zlt_m30s_debug_interface exploit