CVE-2005-1127: Postgrey

Medium severity, CVSS 5.0. EPSS: 2.7% chance of exploitation in the next 30 days.

Format string vulnerability in the log function in Net::Server 0.87 and earlier, as used in Postfix Greylisting Policy Server (Postgrey) 1.18 and earlier, and possibly other products, allows remote attackers to cause a denial of service (crash) via format string specifiers that are not properly handled before being sent to syslog, as demonstrated using sender addresses to Postgrey.

Affected products

• Postgrey Postgrey: up to and including 1.16; version 1.17 only; version 1.18 only

Published 2005-05-02. Last modified 2026-06-16.