CVE-2026-115402 | BDVDB-2026-397189 Detail

OpenVPNovpn-dco-win

Description#

OpenVPN ovpn-dco-win 0.6.5 through 2.8.13 allows unprivileged local users to cause a denial of service (system crash) via a race condition in the TCP connect path.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact none, availability impact high. Attack vector: local.

Weaknesses#

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-672 Operation on a Resource after Expiration or Release

References#

https://community.openvpn.net/Security%20Announcements/CVE-2026-115402

Exploit#

No public exploit known

History#

Version 12026-10-28Record published in the CVE List.
Version 22026-11-06Most recent update recorded in the CVE List.

Published

Published: 2026-10-28
Last modified: 2026-11-06

Vendor information

Vendor: OpenVPN
Product: ovpn-dco-win

All OpenVPN vulnerabilities

Score

5.7 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 1.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Race Condition

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 0.6.5 and <= 2.8.13
Fixed
Not stated

Scoring System

CVSS v4.0

5.7 Medium

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

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Attack Requirements	Present
Privileges Required	Low
User Interaction	None
Vulnerable System Confidentiality	None
Vulnerable System Integrity	None
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).