The update{_bad,}_phishing_sites scripts in mailscanner 4.79.11-2 downloads files and trusts them without using encryption (e.g., https) or digital signature checking which could allow an attacker to replace certain configuration files (e.g., phishing whitelist) via dns/packet spoofing.
Severity
CVSS 3.1
5.5 medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)