Vulnerability DatabaseCVE-2026-78221
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CVE-2026-78221
Published:September 07, 2026
Updated:September 22, 2026
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 Packages
https://github.com/OpenVPN/openvpn.git (GITHUB):
Affected version(s) >=v2.7_alpha1 <v2.7.7
Fix Suggestion:
Update to version v2.7.7
Related Resources (1)
https://community.openvpn.net/Security%20Announcements/CVE-2026-78221
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CVSS v4
Base Score:
5.9
Attack Vector
LOCAL
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
NONE
Subsequent System Availability
HIGH
CVSS v3
Base Score:
7.2
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Incorrect Calculation of Buffer Size
CWE-131
EPSS
Base Score:
0.12