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.
CVSS Details
- CVSS 4.0 Base Score: 6.1 (MEDIUM)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
- CVSS 3.1 Base Score: 7.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade openvpn | Jun 9, 2026 | Jun 8, 2026 |
| Amazon_linux_2023 | — | Upgrade openvpn-debuginfoUpgrade openvpn-debugsourceUpgrade openvpnUpgrade openvpn-devel | Jul 14, 2026 | Jun 8, 2026 |
| Debian | — | Upgrade openvpn | May 24, 2026 | May 24, 2026 |
| Freebsd | — | Upgrade openvpn | Apr 27, 2026 | Apr 22, 2026 |
| Ubuntu | — | Upgrade openvpn | May 25, 2026 | May 20, 2026 |
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