Description
OpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject field
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenVPN | OpenVPN | 2.7_alpha1 – ≤ 2.7.7 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openvpn | 2.7.8-1 | — |
| Debian 13 | openvpn | No fix yet | — |
| Debian 12 | openvpn | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | openvpn | 2.7.7-1ubuntu1.1 | USN-8953-1 |
| Ubuntu 26.04 LTS | openvpn | 2.7.0-1ubuntu1.4 | USN-8953-1 |
| Ubuntu 24.04 LTS | openvpn | 2.6.19-0ubuntu0.24.04.5 | USN-8953-1 |
| Ubuntu 22.04 LTS | openvpn | 2.5.11-0ubuntu0.22.04.6 | USN-8953-1 |
| Ubuntu 20.04 LTS | openvpn | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | openvpn | No fix yet | — |
| Ubuntu Pro 16.04 LTS | openvpn | No fix yet | — |
| Ubuntu Pro 14.04 LTS | openvpn | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | openvpn | 2.3.8-16.41.1 | SUSE-SU-2026:5210-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | openvpn +1 | 2.6.12-1.amzn2023.0.8 | ALAS2023-2026-3226 |
Advisories 4
- SUSE-SU-2026:5210-1 Security update for openvpn SUSE / openSUSE Security Updates · Nov 12, 2026
- WID-SEC-2026-3915 OpenVPN: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2026
- ALAS2023-2026-3226 Important: openvpn security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 26, 2026
- USN-8953-1 openvpn vulnerability Ubuntu Security Notices (USN) · Oct 22, 2026