Description
Insufficient epoch key slot processing in OpenVPN 2.7_alpha1 through 2.7_rc5 allows remote authenticated users to trigger an assert resulting in a denial of service
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenVPN | OpenVPN | 2.7_alpha1 – ≤ 2.7_rc5 | — |
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 | 2.7.0~rc5-1 | — |
Advisories 1
- WID-SEC-2026-0267 OpenVPN: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Feb 1, 2026