Description
OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries
Published: 2026-09-07
Score: 2.3 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 08 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 08 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Title OpenVPN Windows TAP-Windows6 Out-of-Bounds Write via DOMAIN-SEARCH entries openvpn: OpenVPN: Out-of-bounds write via crafted DOMAIN-SEARCH entries
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L'}

threat_severity

Low


Mon, 07 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
Title OpenVPN Windows TAP-Windows6 Out-of-Bounds Write via DOMAIN-SEARCH entries

Mon, 07 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Openvpn
Openvpn openvpn
Vendors & Products Openvpn
Openvpn openvpn

Mon, 07 Sep 2026 08:00:00 +0000

Type Values Removed Values Added
Description OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries
Weaknesses CWE-121
CWE-193
CWE-787
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: OpenVPN

Published:

Updated: 2026-09-08T14:55:10.107Z

Reserved: 2026-08-27T11:45:58.319Z

Link: CVE-2026-81738

cve-icon Vulnrichment

Updated: 2026-09-08T14:55:04.969Z

cve-icon NVD

Status : Received

Published: 2026-09-07T08:17:13.270

Modified: 2026-09-08T15:18:49.360

Link: CVE-2026-81738

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-07T07:32:20Z

Links: CVE-2026-81738 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-07T15:45:17Z

Weaknesses