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 with deferred authentication, which can be used to
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 4.94% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 92.1% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-04-26 13:19Z5 YR AGO
- Last updated
- 2024-08-04 13:08Z2 YR AGO
- Reserved
- 2020-06-25
- Assigning CNA
- OpenVPN
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 65180d1e580a65c66cf9d42df1768e7abc492789c6b0f218f34a89a24f375623
05 Affected products
06 References
- lists.fedoraproject.orgFEDORA-2021-242ef81244https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJUXEYHUPREEBPX23VPEKMFXUPVO3PMU/
- lists.fedoraproject.orgFEDORA-2021-b805c26afahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLDB3OBQ3AODYYRN7NRCABV6I4AUFAT6/
- community.openvpn.nethttps://community.openvpn.net/openvpn/wiki/CVE-2020-15078
- community.openvpn.nethttps://community.openvpn.net/openvpn/wiki/SecurityAnnouncements
- lists.fedoraproject.orgFEDORA-2021-d6b9d8497bhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JGEGLC4YGBDN5CGHTNWN2GH6DJJA36T2/
- security.gentoo.orgGLSA-202105-25https://security.gentoo.org/glsa/202105-25
- usn.ubuntu.comhttps://usn.ubuntu.com/usn/usn-4933-1
- lists.debian.org[debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security updatehttps://lists.debian.org/debian-lts-announce/2022/05/msg00002.html
07 Fixed in
Arch Linux
- openvpn Fixed in 2.5.2-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- openvpn Fixed in 2.5.1-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openvpn Fixed in 2.5.1-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openvpn Fixed in 2.5.1-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- openvpn Fixed in 2.4.4-2ubuntu1.5
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- openvpn Fixed in 2.4.7-1ubuntu2.20.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.