Description
The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a crafted search domain during the disconnection process
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenVPN | OpenVPN | 2.7_alpha1 – ≤ 2.7.4 | — |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | openvpn +1 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 |
| SLES 15 SP6 | openvpn +1 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | openvpn | 2.6.10-160000.5.1 | SUSE-SU-2026:24220-1 |
| SLES for SAP 15 SP6 | openvpn +1 | 2.6.10-150600.3.26.1 | SUSE-SU-2026:3596-1 |
| SLES 16.0 | openvpn | 2.6.10-160000.5.1 | SUSE-SU-2026:24220-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openvpn | 2.7.5-1.1 | openSUSE-SU-2026:11497-1 |
| openSUSE Leap 16.0 | openvpn | 2.6.10-160000.5.1 | openSUSE-SU-2026:22072-1 |
Advisories 5
- SUSE-SU-2026:24220-1 Security update for openvpn SUSE / openSUSE Security Updates · Oct 21, 2026
- WID-SEC-2026-2605 OpenVPN: Schwachstelle ermöglicht DoS und die Offenlegung von Informationen BSI CERT-Bund (WID) · Oct 20, 2026
- openSUSE-SU-2026:22072-1 Security update for openvpn SUSE / openSUSE Security Updates · Oct 19, 2026
- SUSE-SU-2026:3596-1 Security update for openvpn SUSE / openSUSE Security Updates · Aug 13, 2026
- openSUSE-SU-2026:11497-1 openvpn-2.7.5-1.1 on GA media SUSE / openSUSE Security Updates · Aug 12, 2026