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CVE-2026-40215
Component Overview
Vulnerability Overview
Name
CVE-2026-40215
Source
NVD (
link
)
Debian (
link
)
Description
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.
CWEs
CWE-125
Published Date
Jun 8, 2026
Updated Date
Aug 11, 2026
Workaround
-
Advisories
https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026
Release Notes
https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026
Release Notes
https://community.openvpn.net/Security%20Announcements/CVE-2026-40215
Vendor Advisory
Analysis
#
Affected Component
Analysis
openvpn
Exploitable
Vulnerability Ratings
#
6.1
CVSSv4
7.4
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
openvpn
buildroot
2025.02.x
2.6.22
Not Affected
openvpn
buildroot
master
2.7.6
Not Affected
openvpn
openwrt
master
2.7.6-r1
Not Affected
openvpn
openwrt
openwrt-25.12
2.7.6-r1
Not Affected
openvpn
yocto
kirkstone
2.5.11
Not Affected
openvpn
yocto
master
2.7.6
Not Affected