Medium severityNVD Advisory· Published Sep 7, 2026

CVE-2026-78221

Description

An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 allows local authenticated users to cause memory corruption or disclose sensitive information via crafted NRPT inputs.

Affected products

OpenVPN/OpenVPNllm-fuzzy
Range: 2.7_alpha1 - 2.7.6

Patches

Vulnerability mechanics

References

community.openvpn.net/Security%20Announcements/CVE-2026-78221nvd

News mentions

OpenVPN Fixes 7 Security Flaws Affecting VPN Connections and Windows Systems
Cyber Security News · Sep 7, 2026

cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000