Is CVE-2005-0337 in the CISA KEV catalog?

No. CVE-2005-0337 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2005-0337?

CVE-2005-0337 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2005-0337?

CVE-2005-0337 has an EPSS score of 2.81% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2005-0337?

Upgrade postfix on debian 11 to 2.1.4-5 or later.

CVE & CISA-KEV Catalog

CVE-2005-0337

HIGHEPSS 85th pctl

7.5

CVSS v2

NVD

Description

Postfix 2.1.3, when /proc/net/if_inet6 is not available and permit_mx_backup is enabled in smtpd_recipient_restrictions, allows remote attackers to bypass e-mail restrictions and perform mail relaying by sending mail to an IPv6 hostname.

How to fix

Remediation Available

postfixDebian

Fixed in:2.1.4-5CVE-2005-0337

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.81%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch2

Vendor Advisory1

bugs.debian.org

Other references4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.