Vulnerability · Published Aug 14, 2026 · Assigned by OpenVPN
CVE-2026-63650
Low 2.0
In plain English
A low-severity improper certificate validation in OpenVPN from OpenVPN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 4.0)2.0Low
Exploit odds (30 days)0.2%top 86.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | openvpn | no fix listed | DEBIAN-CVE-2026-63650 |
| Debian:13 | openvpn | no fix listed | DEBIAN-CVE-2026-63650 |
| Debian:14 | openvpn | no fix listed | DEBIAN-CVE-2026-63650 |
| Ubuntu:22.04:LTS | openvpn | no fix listed | UBUNTU-CVE-2026-63650 |
| Ubuntu:24.04:LTS | openvpn | no fix listed | UBUNTU-CVE-2026-63650 |
| Ubuntu:26.04:LTS | openvpn | no fix listed | UBUNTU-CVE-2026-63650 |
Affected products (as reported)
Weakness: CWE-295, CWE-115 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N