CRITICAL
jython: Unsafe deserialization leads to code execution
Published Jul 6, 2017
9.8
CRITICALCVSS 3.0
EPSS 6.21%
Description
Jython before 2.7.1rc1 allows attackers to execute arbitrary code via a crafted serialized PyFunction object.
Affected products
No data.
Configuration 1
- 2.7.0
Configuration 2
- 8.0
No data.
Red Hat Enterprise Linux 6
jython
Not affected
Red Hat JBoss Fuse Service Works 6
jython
Will not fix
Red Hat JBoss SOA Platform 5
jython
Will not fix
Red Hat OpenShift Enterprise 2
jython
Not affected
Red Hat Software Collections
rh-eclipse46-jython
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | jython | Not affected | n/a |
| Red Hat JBoss Fuse Service Works 6 | jython | Will not fix | n/a |
| Red Hat JBoss SOA Platform 5 | jython | Will not fix | n/a |
| Red Hat OpenShift Enterprise 2 | jython | Not affected | n/a |
| Red Hat Software Collections | rh-eclipse46-jython | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
9.8 CRITICAL NVD
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 Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
8.1 HIGH Red Hat
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
6.21% 0.06206
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06206
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.21% (0.06206) | 93.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.57% (0.06570) | 92.93th | v5 (v2026.06.15) |
| Mar 13, 2026 | 12.49% (0.12492) | 93.81th | v4 (v2025.03.14) |
| Feb 28, 2026 | 14.49% (0.14492) | 94.30th | v4 (v2025.03.14) |
| Aug 21, 2025 | 15.58% (0.15579) | 94.42th | v4 (v2025.03.14) |
| Jun 18, 2025 | 17.95% (0.17949) | 94.81th | v4 (v2025.03.14) |
| Mar 30, 2025 | 14.49% (0.14492) | 93.86th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.30% (0.28296) | 94.44th | v4 (v2025.03.14) |
| Mar 17, 2025 | 14.49% (0.14492) | 93.93th | v4 (v2025.03.14) |
| Dec 16, 2024 | 3.69% (0.03685) | 92.11th | v3 (v2023.03.01) |
| Dec 12, 2024 | 2.63% (0.02634) | 90.72th | v3 (v2023.03.01) |
| Jul 18, 2024 | 2.34% (0.02340) | 89.90th | v3 (v2023.03.01) |
| Jun 21, 2024 | 1.27% (0.01270) | 85.73th | v3 (v2023.03.01) |
| Jun 16, 2023 | 1.27% (0.01270) | 83.73th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.82% (0.01817) | 86.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.91% (0.03910) | 85.66th | v2 (v2022.01.01) |
| Apr 2, 2022 | 3.91% (0.03910) | 84.19th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.81% (0.03806) | 84.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.81% (0.03806) | 67.27th | v2 (v2022.01.01) |
Weaknesses (1)
References (25)
- http://bugs.jython.org/issue2454 x_refsource_CONFIRMVendor Advisory
- http://www.debian.org/security/2017/dsa-3893 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/105647 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2016-4000 Vendor Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=864859 x_refsource_CONFIRMMailing ListThird Party Advisory
- https://bugs.jython.org/issue2454
- https://bugzilla.redhat.com/show_bug.cgi?id=1461928 Issue Tracking
- https://github.com/advisories/GHSA-6r7r-jj8h-pq6v Advisory
- https://github.com/jython/jython/commit/ee4200fdd5385d3f74a5cf1a781fa52d33bbb274
- https://hg.python.org/jython/file/v2.7.1rc1/NEWS x_refsource_CONFIRMThird Party Advisory
- https://hg.python.org/jython/rev/d06e29d100c0 x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.apache.org/thread.html/0919ec1db20b1022f22b8e78f355667df74d6142b463ff17d03ad533%40%3Cdevnull.infra.apache.org%3E mailing-listx_refsource_MLIST
- https://lists.apache.org/thread.html/0919ec1db20b1022f22b8e78f355667df74d6142b463ff17d03ad533@%3Cdevnull.infra.apache.org%3E
- https://nvd.nist.gov/vuln/detail/CVE-2016-4000
- https://security-tracker.debian.org/tracker/CVE-2016-4000 x_refsource_MISCThird Party Advisory
- https://security.gentoo.org/glsa/201710-28 vendor-advisoryx_refsource_GENTOO
- https://snyk.io/vuln/SNYK-JAVA-ORGPYTHON-31451 x_refsource_MISCThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-4000
- https://www.oracle.com/security-alerts/cpuapr2020.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujan2020.html x_refsource_MISC
- https://www.oracle.com/security-alerts/cpujul2020.html x_refsource_MISC
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html x_refsource_MISC
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html x_refsource_CONFIRM
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html x_refsource_MISC
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 6, 2017
Updated Aug 6, 2024
Reserved Apr 12, 2016
Link CVE-2016-4000
CISA Vulnrichment
GHSA-6R7R-JJ8H-PQ6V Updated n/a