CVE-2003-0386

CVE-2003-0386 is a high-severity vulnerability in Openbsd Openssh 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

OpenSSH 3.6.1 and earlier, when restricting host access by numeric IP addresses and with VerifyReverseMapping disabled, allows remote attackers to bypass "from=" and "user@host" address restrictions by connecting to a host from a system whose reverse DNS hostname contains the numeric IP address.

Frequently asked questions

What is CVE-2003-0386?
OpenSSH 3.6.1 and earlier, when restricting host access by numeric IP addresses and with VerifyReverseMapping disabled, allows remote attackers to bypass "from=" and "user@host" address restrictions by connecting to a host from a system whose reverse DNS hostname contains the numeric IP address.
How severe is CVE-2003-0386?
CVE-2003-0386 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2003-0386 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0386?
CVE-2003-0386 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0386?
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-2003-0386 published?
CVE-2003-0386 was published on 2003-07-02 and last updated on 2026-06-16.

References

Affected products (1)

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