Description
Improper validation of packet length during tls-crypt-v2 key extraction in OpenVPN 2.6.0 through 2.6.19 and 2.7_alpha1 through 2.7.1 allows authenticated attackers to trigger a fatal assertion and cause a denial of service via a specially crafted packet.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
https://community.openvpn.net/Security%20Announcements/CVE-2026-35058
Release Notes release-notes
https://community.openvpn.net/ReleaseHistory#openvpn-272-released-22-april-2026
Release Notes release-notes
https://community.openvpn.net/ReleaseHistory#openvpn-2620-released-22-april-2026
Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2381
Scores
CVSS v4
6.9
EPSS
0.0043
EPSS Percentile
33.9%
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/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
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-617
Status
published
Products (2)
OpenVPN/OpenVPN
2.6.0 - 2.6.19
OpenVPN/OpenVPN
2.7_alpha1 - 2.7.1
Published
Jun 08, 2026
Tracked Since
Jun 09, 2026