CVE-2026-88964

HighCVSS 7.1/10Last modified Oct 15, 2026

Description

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

Metrics

CVSS 4.0 7.1/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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

Weakness enumeration

CWE-125 CWE-191

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
OpenVPN	OpenVPN	>= 2.7_alpha3, <= 2.7.7

References

https://community.openvpn.net/Security%20Announcements/CVE-2026-88964

Timeline

Published: Oct 13, 2026
Last modified: Oct 15, 2026
NVD status: Awaiting Analysis

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