`CVE-2016-4000`

9.8 Critical Protected by RASP

Description

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

CWE-502 · Deserialization of untrusted data

Exploitation Status

No public exploit

Nothing published shows this CVE being exploited, which is not the same as ruling it out. nothing published in 9 years.

CVSS E:U

CISA KEV not listed
CISA Vulnrichment no assessment published
Indexed PoC none indexed
EPSS 6.2% chance in 30 days

Waratek Defense Posture

Protected by RASP

A Waratek agent blocks this today.

Applicable rule: Promoted to MITIGATED-BY-RASP (security rule): this CVE's weakness (CWE-502: Deserialization of Untrusted Data) can be mitigated by an ARMR deserialization security rule that blocks this class of attack at the JVM level, without requiring a CVE-specific patch.

Protection full a general security rule for the vulnerability class
Action available security rule
Review automated inferred
Record active

Decided by secure-rule-match : A vulnerability class already blocked by an ARMR security rule

Finding Promoted to MITIGATED-BY-RASP (security rule): this CVE's weakness (CWE-502: Deserialization of Untrusted Data) can be mitigated by an ARMR deserialization security rule that blocks this class of attack at the JVM level, without requiring a CVE-specific patch.

Decided by	`secure-rule-match` : A vulnerability class already blocked by an ARMR security rule
Finding	Promoted to MITIGATED-BY-RASP (security rule): this CVE's weakness (CWE-502: Deserialization of Untrusted Data) can be mitigated by an ARMR deserialization security rule that blocks this class of attack at the JVM level, without requiring a CVE-specific patch.

CVSS

9.8 CRITICAL v3.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 2 metrics

VRT selects the newest version's highest entry and publishes it as cvssScore, newest rather than largest because scores are not comparable across versions, and highest rather than first because the first entry is frequently a CNA placeholder scoring 0.0 over NVD's own analysis.

Version Score Band Vector Assigner Type

CVSS 3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published

CVSS 2.0 7.5 no band published AV:N/AC:L/Au:N/C:P/I:P/A:P NVD Primary

Version	Score	Band	Vector	Assigner	Type
CVSS 3.0	9.8	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`	NVD	Primary	published
CVSS 2.0	7.5	no band published	`AV:N/AC:L/Au:N/C:P/I:P/A:P`	NVD	Primary

Affected Software & Releases

🏛️ Oracle CPU Advisories & Products

Advisory	Type	Quarter	Products Oracle named in risk matrix
Oracle Critical Patch Update July 2020 ↗	CPU	2020-Q3	Oracle Supply Chain / Middle Tier (jython) (12.1, 12.2)
Oracle Critical Patch Update April 2020 ↗	CPU	2020-Q2	Oracle Communications Applications / IDIH Visualization (Jython) (8.0.0, 8.1.0, 8.2.0, 8.2.1)
Oracle Critical Patch Update January 2020 ↗	CPU	2020-Q1	Oracle Enterprise Manager / Oracle Flow Builder (Jython) (12.5.0.3, 13.1.0.1, 13.2.0.1, 13.3.0.1)
Oracle Critical Patch Update October 2019 ↗	CPU	2019-Q4	Oracle Enterprise Manager / Command Line Interface (Jython) (13.2, 13.3)
Oracle Critical Patch Update April 2019 ↗	CPU	2019-Q2	Oracle Enterprise Manager Products Suite / Collector of Config and Diag (Jython) (12.1.0)
Oracle Critical Patch Update January 2019 ↗	CPU	2019-Q1	Oracle Enterprise Manager Products Suite / Agent Next Gen (Jython) (12.1.0.5, 13.2.0, 13.3.0) Oracle Financial Services Applications / Patching (Jython) (2.6.0, 2.6.1, 2.6.2) Oracle Utilities Applications / System wide (Jython) (1.12.0.3, 2.3.0.0, 2.3.0.1, 2.3.0.2)
Oracle Critical Patch Update October 2018 ↗	CPU	2018-Q4	Oracle Enterprise Manager Products Suite / Networking (Jython) (12.2.2, 12.3.3)

Advisory

Type

Quarter

Products Oracle named in risk matrix

Oracle Critical Patch Update July 2020 ↗

CPU

2020-Q3

Oracle Supply Chain / Middle Tier (jython) (12.1, 12.2)

Oracle Critical Patch Update April 2020 ↗

CPU

2020-Q2

Oracle Communications Applications / IDIH Visualization (Jython) (8.0.0, 8.1.0, 8.2.0, 8.2.1)

Oracle Critical Patch Update January 2020 ↗

CPU

2020-Q1

Oracle Enterprise Manager / Oracle Flow Builder (Jython) (12.5.0.3, 13.1.0.1, 13.2.0.1, 13.3.0.1)

Oracle Critical Patch Update October 2019 ↗

CPU

2019-Q4

Oracle Enterprise Manager / Command Line Interface (Jython) (13.2, 13.3)

Oracle Critical Patch Update April 2019 ↗

CPU

2019-Q2

Oracle Enterprise Manager Products Suite / Collector of Config and Diag (Jython) (12.1.0)

Oracle Critical Patch Update January 2019 ↗

CPU

2019-Q1

Oracle Enterprise Manager Products Suite / Agent Next Gen (Jython) (12.1.0.5, 13.2.0, 13.3.0)
Oracle Financial Services Applications / Patching (Jython) (2.6.0, 2.6.1, 2.6.2)
Oracle Utilities Applications / System wide (Jython) (1.12.0.3, 2.3.0.0, 2.3.0.1, 2.3.0.2)

Oracle Critical Patch Update October 2018 ↗

CPU

2018-Q4

Oracle Enterprise Manager Products Suite / Networking (Jython) (12.2.2, 12.3.3)

Indexed Oracle Components & Versions

Family	Component	Oracle's version cell (verbatim)	Indexed as
Oracle Communications Applications	IDIH Visualization (Jython)	8.0.0, 8.1.0, 8.2.0, 8.2.1	8.0.0 · 8.1.0 · 8.2.0 · 8.2.1
Oracle Enterprise Manager	Command Line Interface (Jython)	13.2, 13.3	13.2 · 13.3
Oracle Enterprise Manager	Oracle Flow Builder (Jython)	12.5.0.3, 13.1.0.1, 13.2.0.1, 13.3.0.1	12.5.0.3 · 13.1.0.1 · 13.2.0.1 · 13.3.0.1
Oracle Enterprise Manager Products Suite	Agent Next Gen (Jython)	12.1.0.5, 13.2.0, 13.3.0	12.1.0.5 · 13.2.0 · 13.3.0
Oracle Enterprise Manager Products Suite	Collector of Config and Diag (Jython)	12.1.0	12.1.0
Oracle Enterprise Manager Products Suite	Networking (Jython)	12.2.2, 12.3.3	12.2.2 · 12.3.3
Oracle Financial Services Applications	Patching (Jython)	2.6.0, 2.6.1, 2.6.2	2.6.0 · 2.6.1 · 2.6.2
Oracle Supply Chain	Middle Tier (jython)	12.1, 12.2	12.1 · 12.2
Oracle Utilities Applications	System wide (Jython)	1.12.0.3, 2.3.0.0, 2.3.0.1, 2.3.0.2	1.12.0.3 · 2.3.0.0 · 2.3.0.1 · 2.3.0.2

Family

Component

Oracle's version cell (verbatim)

Indexed as

Oracle Communications Applications

IDIH Visualization (Jython)

8.0.0, 8.1.0, 8.2.0, 8.2.1

8.0.0 · 8.1.0 · 8.2.0 · 8.2.1

Oracle Enterprise Manager

Command Line Interface (Jython)

13.2, 13.3

13.2 · 13.3

Oracle Enterprise Manager

Oracle Flow Builder (Jython)

12.5.0.3, 13.1.0.1, 13.2.0.1, 13.3.0.1

12.5.0.3 · 13.1.0.1 · 13.2.0.1 · 13.3.0.1

Oracle Enterprise Manager Products Suite

Agent Next Gen (Jython)

12.1.0.5, 13.2.0, 13.3.0

12.1.0.5 · 13.2.0 · 13.3.0

Oracle Enterprise Manager Products Suite

Collector of Config and Diag (Jython)

12.1.0

Oracle Enterprise Manager Products Suite

Networking (Jython)

12.2.2, 12.3.3

12.2.2 · 12.3.3

Oracle Financial Services Applications

Patching (Jython)

2.6.0, 2.6.1, 2.6.2

2.6.0 · 2.6.1 · 2.6.2

Oracle Supply Chain

Middle Tier (jython)

12.1, 12.2

12.1 · 12.2

Oracle Utilities Applications

System wide (Jython)

1.12.0.3, 2.3.0.0, 2.3.0.1, 2.3.0.2

1.12.0.3 · 2.3.0.0 · 2.3.0.1 · 2.3.0.2

☕ Maven Library Packages

Artifact coordinates and fix boundaries from OSV.dev

Package Coordinate Introduced Fixed Last affected

org.python:jython-standalone 0 2.7.1b3 unbounded

org.python:jython 0 2.7.1b3 unbounded

Package Coordinate	Introduced	Fixed	Last affected
`org.python:jython-standalone`	0	`2.7.1b3`	unbounded
`org.python:jython`	0	`2.7.1b3`	unbounded

🖥️ Product CPEs & Version Ranges

4 product(s) over 4 version claims (uncapped)

Source	Vendor	Product	Scheme	Affected Versions
nvd	debian	debian linux	generic	8.0
nvd	jython project	jython	generic	2.7.0
osv	org.python	jython	generic	＜ 2.7.1.3
osv	org.python	jython-standalone	generic	＜ 2.7.1.3

Source

Vendor

Product

Scheme

Affected Versions

nvd

debian

debian linux

generic

8.0

nvd

jython project

jython

generic

2.7.0

osv

org.python

jython

generic

＜ 2.7.1.3

osv

org.python

jython-standalone

generic

＜ 2.7.1.3

References

URL	Tags
https://github.com/jython/jython/commit/ee4200fdd5385d3f74a5cf1a781fa52d33bbb274	WEB
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html	WEB
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html	WEB
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html	WEB
https://www.oracle.com/security-alerts/cpujul2020.html	WEB
https://www.oracle.com/security-alerts/cpujan2020.html	WEB
https://www.oracle.com/security-alerts/cpuapr2020.html	WEB
https://snyk.io/vuln/SNYK-JAVA-ORGPYTHON-31451	WEB
https://security.gentoo.org/glsa/201710-28	WEB
https://security-tracker.debian.org/tracker/CVE-2016-4000	WEB

URL

Timeline

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

Published	2017-07-06	By the CVE Program.
NVD record modified	2026-06-17	NVD's own last-modified date for this record.

Published

2017-07-06

By the CVE Program.

NVD record modified

2026-06-17

NVD's own last-modified date for this record.

Pipeline policy audit (15 of 21 rules evaluated)

15 of 21 rules ran. The rest were never reached, because an earlier stage settled the CVE, a distinct claim from a rule that ran and found nothing.

# Rule Outcome Status Detail

identity: Does this identifier describe a vulnerability at all? first match wins

1 rejected no-match CVE Program withdrawal of this identifier

scope: Is the vulnerability ARMR's to address? first match wins

2 armr-patch-file no-match An ARMR patch file on disk for this CVE

3 armr-secure-rule-file no-match An ARMR security-rule template on disk for this CVE

4 manual-classification no-match A researcher's recorded decision for this specific CVE

5 manual classification no-match Manual classification of this CVE in the legacy dataset

6 non-java-upstream no-match A root cause in non-Java code: an OS kernel, a C library, or a bundled runtime

7 oracle-component no-match The defect being in a component of a tracked product the agent does not reach: JavaFX, the Java SE installer, the native WebLogic proxy plug-in. Oracle gives these no CPE of their own and names them only in the description.

8 osv-maven matched Queued for review Maven packages: org.python:jython-standalone, org.python:jython

9 cna-maven-package not-reached An affected Maven artifact named by the CNA itself

10 known-cpe-product not-reached An NVD CPE naming a product ARMR tracks

11 cna-cpe-product not-reached A CPE the CNA published naming a tracked product. Oracle publishes these on advisory day, months before NVD.

12 oracle-advisory-family not-reached A tracked product family named in Oracle's own risk matrix. CPE cannot carry a suite name, only a module.

13 non-deployable-product not-reached The only affected product being a sealed appliance image, where Java runs but no -javaagent can be attached

14 unmatched-product not-reached No tracked product matched above, and none present at all

disposition: What do we do about one that is? cumulative: every rule gets a turn

15 patch-hint no-match A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug

16 open-source-maven matched Mitigation candidate Open-source Maven artifact indexed by OSV (Maven packages: org.python:jython-standalone, org.python:jython). The source is public, which makes an ARMR patch rule a candidate; nothing here establishes that one can be written.

17 poc-derivable skipped An indexed exploit to reverse-engineer, where there is no source to read

18 no-exploit skipped With no fix path, a public exploit, or a CISA record of one

19 secure-rule-match decided it matched Protected by RASP CWE-502 (Deserialization of Untrusted Data) is mitigable by an ARMR deserialization security rule.

20 below-action-threshold skipped Medium or Low severity, no KEV listing, no PoC clearing the evidence bar, no CISA verdict, no Oracle advisory

21 no-exploit-published skipped A published working exploit for this candidate, not only a proof of concept, a forecast, or nothing at all

What the scope rules read

The products the record named, and whether known-products.yaml tracks them. This is the evidence the scope stage decided on.

Vendor Product Tracked CPE Source

jython_project jython tracked cpe:2.3:a:jython_project:jython:2.7.0:*:*:*:*:*:*:* yaml

debian debian_linux not tracked cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Raw stored JSON document for this CVE ↗ · NVD ↗ · CVE.org ↗