CVE-2026-88964

State: Published
Severity: 7.1 High
Published: Oct 13, 2026
Updated: Oct 14, 2026
Reserved: Sep 10, 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

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	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	OpenVPN

Weaknesses

CWE-191 Integer underflow (wrap or wraparound)
CWE-125 Out-of-bounds read

Affected Products

Product	Versions
OpenVPNOpenVPN	2.7_alpha3 through 2.7.7Affected

References

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

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