CVE

CVE-2019-17571

Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.

Severity

CRITICAL

CVSS

9.8

Published

Dec 20, 2019

Modified

Jun 17, 2026