CVE-2025-59419: netty < 4.2.7.Final, >= 4.2.0.Alpha1, < 4.1.128.Final

Affected technology

netty · < 4.2.7.Final, >= 4.2.0.Alpha1, < 4.1.128.Final
netty

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source says when methods such as SmtpRequests.rcpt(recipient) are called with a malicious string containing CRLF sequences, attackers can inject arbitrary SMTP commands. Vendor/CNA’s CVSS 4.0 assessment (base score 5.5/10) rates confidentiality and availability impact as none; integrity impact as low.