What is the CVSS score of CVE-2016-4000?

CVE-2016-4000 has a CVSS 3.0 base score of 9.8 (Critical). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 12.5%.

Is there a patch available for CVE-2016-4000?

Yes, a patch is available for CVE-2016-4000. Update the affected software to the latest version immediately.

Jython CVE-2016-4000

CRITICAL

Deserialization of Untrusted Data (CWE-502)

2017-07-06 cve@mitre.org

GHSA-6r7r-jj8h-pq6v

Deserialization RCE Jython Debian Linux

9.8

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jul 06, 2017 - 16:29 cve.org

CRITICAL 9.8

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

15 maven packages depend on org.python:jython (6 direct, 9 indirect)
41 maven packages depend on org.python:jython-standalone (13 direct, 28 indirect)

Ecosystem-wide dependent count for version 2.7.1b3 and other introduced versions.

DescriptionCVE.org

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

AnalysisAI

Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 12.5%.

Technical ContextAI

This vulnerability is classified as Deserialization of Untrusted Data (CWE-502), which allows attackers to execute arbitrary code through malicious serialized objects. Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object. Affected products include: Jython Project Jython, Debian Debian Linux. Version information: before 2.7.1.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Avoid deserializing untrusted data. Use safe serialization formats (JSON). Implement integrity checks and type allowlists.