openvpn: A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially...
CVE-2026-40215 is fixed in 5 products on 1 platform, first by openvpn 2.5.11-0ubuntu0.22.04.3, released April 22, 2026. It is not reported as exploited. Patch Radar priority: High.
A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| openvpn · Debian 12.15 (bookworm) | 2.6.14-0+deb12u1 | DEBIAN-CVE-2026-40215 | May 15, 2026 |
| openvpn · Debian 13.5 (trixie) | 2.6.14-1+deb13u2 | DEBIAN-CVE-2026-40215 | May 15, 2026 |
| openvpn · Debian 14 | 2.7.2-1 | DEBIAN-CVE-2026-40215 | May 15, 2026 |
| openvpn · Ubuntu 22.04.1 LTS (jammy) | 2.5.11-0ubuntu0.22.04.3 | openvpn 2.5.11-0ubuntu0.22.04.3 | Apr 22, 2026 |
| openvpn · Ubuntu 24.04.5 LTS (noble) | 2.6.19-0ubuntu0.24.04.2 | openvpn 2.6.19-0ubuntu0.24.04.2 | Apr 22, 2026 |
| openvpn · Ubuntu 25.10 (questing) | 2.6.19-0ubuntu0.25.10.2 | openvpn 2.6.19-0ubuntu0.25.10.2 | Apr 22, 2026 |
| openvpn · Ubuntu 26.04.1 LTS (resolute) | 2.7.0-1ubuntu1.1 | openvpn 2.7.0-1ubuntu1.1 | Apr 22, 2026 |
| openvpn · amzn 2023 | 2.6.12-1.amzn2023.0.4 | ALAS2023-2026-1644 | May 11, 2026 |
| openvpn · opensuse-leap 16.0 | 2.6.10-160000.5.1 | OPENSUSE-SU-2026:22072-1 | Nov 7, 2026 |
| openvpn · sles 15.6 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 | Aug 12, 2026 |
| openvpn · sles 15.7 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 | Aug 12, 2026 |
| openvpn · sles 16.0 | 2.6.10-160000.5.1 | SUSE-SU-2026:24220-1 | Nov 7, 2026 |
| openvpn-dco · sles 15.6 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 | Aug 12, 2026 |
| openvpn-dco · sles 15.7 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 | Aug 12, 2026 |
| openvpn-debuginfo · amzn 2023 | 2.6.12-1.amzn2023.0.4 | ALAS2023-2026-1644 | May 11, 2026 |
| openvpn-debugsource · amzn 2023 | 2.6.12-1.amzn2023.0.4 | ALAS2023-2026-1644 | May 11, 2026 |
| openvpn-devel · amzn 2023 | 2.6.12-1.amzn2023.0.4 | ALAS2023-2026-1644 | May 11, 2026 |
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