CVE-2026-84256

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.7 on Windows allows remote authenticated users to execute arbitrary commands via a crafted certificate subject

CVSS 4.0

7.7CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-25)

CWEs

CWE-78, CWE-88

Published

2026-09-07

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

References

• https://community.openvpn.net/Security%20Announcements/CVE-2026-84256

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