CVE-2026-13379

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

5.1 MEDIUMEPSS 0.33%Not in KEVNVD: Analyzed

Last updated: 2026-08-05 19:37 UTC

OverviewCVSS details

5.1MEDIUMCVSS 4.0

Score source: OpenVPN (CNA)
NVD status: Analyzed
Published: Jul 30, 2026
Assigner: OpenVPN

Affected

OpenVPN (OpenVPN)

Versions: 2.7_alpha1 through 2.7.4

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact partial

EPSS · FIRST, scored Nov 9

0.33%chance of exploitation in 30 days

Higher than 27.47% of CVEs

CVSS 4.0 · OpenVPN (CNA)

5.1Medium

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

Attack vector: Network
Attack complexity: Low
Attack requirements: Present
Privileges required: Low
User interaction: Passive
Confidentiality impact: Low
Integrity impact: None
Availability impact: Low
Confidentiality (other systems): High
Integrity (other systems): None
Availability (other systems): High

CVSS 3.1 · NVD

9.1Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: None
Availability impact: High

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
5.1	MEDIUM	4.0OpenVPN (CNA)	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
9.1	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Details

CVE ID: CVE-2026-13379
Status: Analyzed
Assigner (CNA): OpenVPN
Published: Jul 30, 2026
Last modified: 2026-08-05 19:37 UTC
Weaknesses: CWE-142 · Improper neutralization of value delimiters
CWE-125 · Out-of-bounds read

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-10 10:16 UTC.