CVE-2005-3393

CVE-2005-3393 is a high-severity vulnerability in Openvpn with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2005-3393?
CVE-2005-3393 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-3393 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-3393?
CVE-2005-3393 primarily affects Openvpn. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-3393?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-3393 published?
CVE-2005-3393 was published on 2005-11-01 and last updated on 2026-06-16.

References

Affected products (4)

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