CVE-2020-15077: openvpn openvpn_access_server
CVSS: 5.3v3.1MediumModified
Published 04-06-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-15077 is a medium (CVSS 5.3) vulnerability in openvpn openvpn_access_server. EPSS estimates a 1.21% chance of exploitation in the next 30 days, higher than 68.1% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (NVD)EPSS score
1.21%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 04-06-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
OpenVPN Access Server 2.8.7 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.
CVSS metrics
2 scores · 1 source · 2 versionsMedium 5.3Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NSourcesSingle source
Low 3.5Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.21%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
0.00 pp
From 1.21% on 20-09-2026
20-09-202620-10-2026
EPSS score1.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-305Authentication Bypass by Primary WeaknessThe authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
- CWE-287Improper AuthenticationWhen an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected systems
Openvpn1 product
- openvpn_access_server≤ 2.8.7
1 vendor · 1 product
References
2 links- openvpn.net/security-advisory/access-server-security-update-cve-2020-15077/X Refsource MISCVendor Advisory