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

CVE-2020-15078 is fixed in openvpn on 1 platform, first by openvpn 2.4.4-2ubuntu1.5, released April 26, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-15078
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0495
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 26, 2021

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | openvpn Ubuntu 18.04.6 LTS (bionic) | 2.4.4-2ubuntu1.5 | [openvpn 2.4.4-2ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openvpn-2.4.4-2ubuntu1.5.md) | Apr 26, 2021 |
| Linux | openvpn Ubuntu 20.04 LTS (focal) | 2.4.7-1ubuntu2.20.04.2 | [openvpn 2.4.7-1ubuntu2.20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openvpn-2.4.7-1ubuntu2.20.04.2.md) | Apr 26, 2021 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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