UpHeron
All vulnerabilities

Servers and applications

CVE-2005-3393

Format string vulnerability in the foreign_option function in options.c for OpenVPN 2.0.x allows remote clients to execute arbitrary code via format string specifiers in a push of the dhcp-option command option.

Severity
High 7.5
Published
1 Nov 2005
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
3.5% in the next 30 daysHigher than 89% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
OpenVPNServers and applications · cpe:a:openvpn:openvpn
  • Version 2.0_beta11
  • Version 2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2005-3393
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2005-3393