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Vulnerability record · CVE-2014-4616 · published 24 August 2017

CVE-2014-4616: Python vulnerability

Python · Python

Array index error in the scanstring function in the _json module in Python 2.7 through 3.5 and simplejson before 2.6.1 allows context-dependent attackers to read arbitrary process memory via a negative index value in the idx argument to the raw_decode function.

5.9 CVSS 3.1 Medium EPSS 8.1% · top 5.4% CWE-129 · CWE-129
5.9CVSS 3.1 base score, v2 4.3
8.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
18References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Array index error in the scanstring function in the _json module in Python 2.7 through 3.5 and simplejson before 2.6.1 allows context-dependent attackers to read arbitrary process memory via a negative index value in the idx argument to the raw_decode function.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.python.org/issue21529 Issue TrackingVendor Advisory
http://lists.opensuse.org/opensuse-updates/2014-07/msg00015.html Mailing ListThird Party Advisory
http://openwall.com/lists/oss-security/2014/06/24/7 Mailing ListThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1064.html Third Party Advisory
http://www.securityfocus.com/bid/68119 Third Party AdvisoryVDB Entry
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=752395 Issue TrackingMailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1112285 Issue TrackingPatchThird Party Advisory
https://hackerone.com/reports/12297 ExploitPatchThird Party Advisory
https://security.gentoo.org/glsa/201503-10 PatchThird Party AdvisoryVDB Entry
http://bugs.python.org/issue21529 Issue TrackingVendor Advisory
http://lists.opensuse.org/opensuse-updates/2014-07/msg00015.html Mailing ListThird Party Advisory
http://openwall.com/lists/oss-security/2014/06/24/7 Mailing ListThird Party Advisory
http://rhn.redhat.com/errata/RHSA-2015-1064.html Third Party Advisory
http://www.securityfocus.com/bid/68119 Third Party AdvisoryVDB Entry
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=752395 Issue TrackingMailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1112285 Issue TrackingPatchThird Party Advisory
https://hackerone.com/reports/12297 ExploitPatchThird Party Advisory
https://security.gentoo.org/glsa/201503-10 PatchThird Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2014-4616), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.