CVE-2026-84732
Fixed in a distro release EPSS <1%CVSS 8.7
Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow
Products: OpenVPN
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.24 | openvpn | 2.7.7-r0 |
| Debian 12 | openvpn | no fix |
| Debian 13 | openvpn | no fix |
| Debian 14 | openvpn | 2.7.7-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | openvpn | 2.6.10-150600.3.37.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | openvpn-dco | 2.6.10-150600.3.37.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | openvpn | 2.3.8-16.38.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | openvpn | 2.6.10-150600.3.37.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | openvpn-dco | 2.6.10-150600.3.37.1 |
| SUSE Linux Enterprise Server 16.0 | openvpn | 2.6.10-160000.5.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | openvpn | 2.3.8-16.38.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | openvpn | 2.5.6-150400.3.28.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | openvpn | 2.6.10-150600.3.37.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | openvpn-dco | 2.6.10-150600.3.37.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | openvpn | 2.6.10-160000.5.1 |
| Ubuntu 20.04 LTS | openvpn | no fix |
| Ubuntu 22.04 LTS | openvpn | 2.5.11-0ubuntu0.22.04.5 |
| Ubuntu 24.04 LTS | openvpn | 2.6.19-0ubuntu0.24.04.4 |
| Ubuntu 26.04 LTS | openvpn | 2.7.0-1ubuntu1.3 |
| Ubuntu Pro 14.04 LTS | openvpn | no fix |
| Ubuntu Pro 16.04 LTS | openvpn | no fix |
| Ubuntu Pro 18.04 LTS | openvpn | no fix |
| openSUSE Leap 16.0 | openvpn | 2.6.10-160000.5.1 |