CVE-2003-0468

CVE-2003-0468 is a medium-severity vulnerability in Wietse Venema Postfix with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Postfix 1.1.11 and earlier allows remote attackers to use Postfix to conduct "bounce scans" or DDos attacks of other hosts via an email address to the local host containing the target IP address and service name followed by a "!" string, which causes Postfix to attempt to use SMTP to communicate with the target on the associated port.

Frequently asked questions

What is CVE-2003-0468?
Postfix 1.1.11 and earlier allows remote attackers to use Postfix to conduct "bounce scans" or DDos attacks of other hosts via an email address to the local host containing the target IP address and service name followed by a "!" string, which causes Postfix to attempt to use SMTP to communicate with the target on the associated port.
How severe is CVE-2003-0468?
CVE-2003-0468 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0468 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0468?
CVE-2003-0468 primarily affects Wietse Venema Postfix. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0468?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0468 published?
CVE-2003-0468 was published on 2003-08-27 and last updated on 2026-06-16.

References

Affected products (8)

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