CVE-2026-40215
MEDIUM EPSS 22.6%
Published Jun 8, 20263w ago · Modified Jun 17, 20261w ago
6.1 CVSS 4.0
Published Jun 8, 2026 3w ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:L/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
22.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 2
CWE-125 Out-of-bounds Read Memory Safety
CWE-416 Use After Free Memory Safety
References 3
- community.openvpn.net https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026
- community.openvpn.net https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026
- community.openvpn.net https://community.openvpn.net/Security%20Announcements/CVE-2026-40215
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.