OpenVPN 2.0.7 and earlier, when configured to use the --management option with an IP that is not 127.0.0.1, uses a cleartext password for TCP sessions to the management interface, which might allow remote attackers to view sensitive information or cause a denial of service.
Severity
Medium 4.0
Published
5 May 2006
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.4% in the next 30 daysHigher than 72% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · Only under certain conditions · No login needed
Attacker can
Read some data · Slow it down
CVSS vector
AV:N/AC:H/Au:N/C:P/I:N/A:P
Sources
NVD
Affected software
Software
Affected versions
OpenVPNServers and applications · cpe:a:openvpn:openvpn