CVE-2025-13086

EUVD-2025-201102
Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 18%
Affected Products (NVD)
VendorProductVersion
openvpnopenvpn
2.6.0 ≤
𝑥
< 2.6.16
openvpnopenvpn
2.7:alpha1
openvpnopenvpn
2.7:alpha2
openvpnopenvpn
2.7:alpha3
openvpnopenvpn
2.7:beta1
openvpnopenvpn
2.7:beta2
openvpnopenvpn
2.7:beta3
openvpnopenvpn
2.7:rc1
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
openvpn
bookworm
2.6.3-1+deb12u4
fixed
bookworm (security)
2.6.3-1+deb12u4
fixed
bullseye
2.5.1-3
not-affected
bullseye (security)
2.5.1-3+deb11u2
fixed
forky
2.7.0-1
fixed
sid
2.7.0-1
fixed
trixie
2.6.14-1+deb13u1
fixed
trixie (security)
2.6.14-1+deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
openvpn
bionic
not-affected
focal
not-affected
jammy
not-affected
noble
Fixed 2.6.14-0ubuntu0.24.04.3
released
plucky
Fixed 2.6.14-0ubuntu0.25.04.3
released
questing
Fixed 2.6.14-2ubuntu1.1
released
trusty
not-affected
xenial
not-affected
Common Weakness Enumeration
References
https://community.openvpn.net/Security%20Announcements/CVE-2025-13086
https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html
https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html