CVE-2016-4000: Debian Linux

Critical severity, CVSS 9.8. EPSS: 6.2% chance of exploitation in the next 30 days.

Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object.

Affected products

• Debian Debian Linux: version 8.0 only
• Jython Project Jython: version 2.7.0 only

Published 2017-07-06. Last modified 2026-06-17.