Detections
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OpenVPN 2.7_alpha1 < 2.7.5 DNS State Pollution / DoS (CVE-2026-13379)

medium Nessus Plugin ID 335012

Synopsis

An application on the remote Windows host is affected by a denial of service vulnerability.

Description

According to its self-reported version number, the version of OpenVPN installed on the remote Windows host is 2.7_alpha1 through 2.7.4. It is, therefore, affected by a denial of service vulnerability:

 - The Windows interactive service in OpenVPN 2.7_alpha1 through 2.7.4 allows remote attackers to cause persistent DNS state pollution or a service crash via a crafted search domain during the disconnection process. (CVE-2026-13379)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to OpenVPN 2.7.5 or later.

See Also

http://www.nessus.org/u?93848804

http://www.nessus.org/u?ee258129

Plugin Details

Severity: Medium

ID: 335012

File Name: openvpn_CVE-2026-13379.nasl

Version: 1.1

Type: Local

Agent: windows

Family: Windows

Published: 8/13/2026

Updated: 8/13/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.61

CVSS v2

Risk Factor: High

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C

CVSS Score Source: CVE-2026-13379

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS v4

Risk Factor: Medium

Base Score: 5

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/VA:L/SC:H/SI:N/SA:H

Vulnerability Information

CPE: cpe:/a:openvpn:openvpn

Required KB Items: installed_sw/OpenVPN Server

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 7/30/2026

Reference Information

CVE: CVE-2026-13379

CWE: 125, 142