CVE-2026-40215

Published: Giu 08, 2026 Last Modified: Giu 08, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,1
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

A race condition in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows remote attackers to potentially cause a server crash or leak heap memory via a use-after-free triggered during TLS session promotion.

125

Out-of-bounds Read

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Availability Other
Potential Impacts:
Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Technologies: ICS/OT
View CWE Details
416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Read Memory Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Likelihood of Exploit: High
View CWE Details
https://community.openvpn.net/ReleaseHistory#openvpn-2620-r…
https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026
https://community.openvpn.net/ReleaseHistory#openvpn-272-re…
https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026
https://community.openvpn.net/Security%20Announcements/CVE-…
https://community.openvpn.net/Security%20Announcements/CVE-2026-40215