CVE-2026-88964

HIGH CVSS 4.0: 7.1 EPSS 0.47%
Updated Oct 15, 2026
Openvpn
Parameter Value
CVSS 7.1 (HIGH)
Type CWE-125 (Out-of-bounds Read), CWE-191 (Integer Underflow)
Vendor Openvpn
Public PoC No

An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0