Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet

Attack Vector Local

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00014.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
OpenVPN ovpn-dco-win unaffected
Version Status Constraints
2.8.0 affected —

No data.

No data.

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Vendors Products
Openvpn Subscribe
Ovpn-dco-win Subscribe

Project Subscriptions

Vendors Products
Openvpn Subscribe
Ovpn-dco-win Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://community.openvpn.net/Security%20Announcements/CVE-2026-2738 cve-icon cve-icon
History

Fri, 20 Feb 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Openvpn
Openvpn ovpn-dco-win
Vendors & Products Openvpn
Openvpn ovpn-dco-win

Thu, 19 Feb 2026 20:30:00 +0000

Type Values Removed Values Added
Description Buffer overflow in ovpn‑dco‑win version 2.8.0 allows local attackers to cause a system crash by sending too large packets to the remote peer when the AEAD tag appears at the end of the encrypted packet
Weaknesses CWE-131
References
Metrics cvssV4_0

{'score': 5.6, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OpenVPN

Published:

Updated: 2026-02-19T20:00:30.951Z

Reserved: 2026-02-19T10:23:29.009Z

Link: CVE-2026-2738

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-19T21:18:33.773

Modified: 2026-02-20T13:49:47.623

Link: CVE-2026-2738

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-20T09:54:08Z

Weaknesses