[ CVE-2026-84471 · Published 14 Oct 2026 ]

Vulnerability in OpenVPN

CVSS 7.2 EPSS <1%1 agency advisoryNo fix listed yet

[ Description ]Official description

The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

BSI CERT-Bund14 Oct 2026WID-SEC-2026-3959

OpenVPN: Vulnerability allows denial of service Translated from German
CVE-2026-84471

[ References ]References

community.openvpn.net/Security%20Announcements/CVE-2026-84471

[ Facts ]Key facts

CVE: CVE-2026-84471
EUVD: EUVD-2026-101085
Published: 14 Oct 2026, 15:17 UTC
Updated: 16 Oct 2026, 16:21 UTC
NVD status: Awaiting Analysis
CVSS 4.0: 7.2 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/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
Scored by security@openvpn.net
EPSS: 0.41% chance of exploitation in 30 days · higher than 34% of CVEs
CISA SSVC: Exploitation: none · Automatable: no · Impact: partial
Weakness: CWE-416

[ Affected ]Affected products

OpenVPN OpenVPN2.6.0 – ≤ 2.6.22, 2.7_alpha1 – ≤ 2.7.7

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

OpenVPN: Vulnerability allows denial of service Translated from German

[ References ]References