What’s Vulnerable › Vulnerabilities

CVE-2016-4000

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-07-06 · updated 2026-06-17
• Weakness: CWE-502

Description

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

Affected products

• Debian Linux: 8.0
• Jython Project Jython: 2.7.0

References

• http://bugs.jython.org/issue2454
• http://www.debian.org/security/2017/dsa-3893
• http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
• http://www.securityfocus.com/bid/105647
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864859
• https://hg.python.org/jython/file/v2.7.1rc1/NEWS
• https://hg.python.org/jython/rev/d06e29d100c0
• https://lists.apache.org/thread.html/0919ec1db20b1022f22b8e78f355667df74d6142b463ff17d03ad533%40%3Cdevnull.infra.apache.org%3E
• https://security-tracker.debian.org/tracker/CVE-2016-4000
• https://security.gentoo.org/glsa/201710-28
• https://snyk.io/vuln/SNYK-JAVA-ORGPYTHON-31451
• https://www.oracle.com/security-alerts/cpuapr2020.html

Get alerted when CVE-2016-4000 or the next vulnerability affects your stack