CVE-2016-5636
Summary
| CVE | CVE-2016-5636 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-09-02 14:59:06 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| Description | Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 allows remote attackers to have unspecified impact via a negative data size value, which triggers a heap-based buffer overflow. |
Risk And Classification
Primary CVSS: v3.0 9.8 CRITICAL from [email protected]
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.451230000 probability, percentile 0.976190000 (date 2026-05-06)
Problem Types: CWE-190 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 10 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
CompleteIntegrity
CompleteAvailability
CompleteAV:N/AC:L/Au:N/C:C/I:C/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Python | Python | 3.0 | All | All | All |
| Application | Python | Python | 3.0.1 | All | All | All |
| Application | Python | Python | 3.1.0 | All | All | All |
| Application | Python | Python | 3.1.1 | All | All | All |
| Application | Python | Python | 3.1.2 | All | All | All |
| Application | Python | Python | 3.1.3 | All | All | All |
| Application | Python | Python | 3.1.4 | All | All | All |
| Application | Python | Python | 3.1.5 | All | All | All |
| Application | Python | Python | 3.2.0 | All | All | All |
| Application | Python | Python | 3.2.1 | All | All | All |
| Application | Python | Python | 3.2.2 | All | All | All |
| Application | Python | Python | 3.2.3 | All | All | All |
| Application | Python | Python | 3.2.4 | All | All | All |
| Application | Python | Python | 3.2.5 | All | All | All |
| Application | Python | Python | 3.2.6 | All | All | All |
| Application | Python | Python | 3.3.0 | All | All | All |
| Application | Python | Python | 3.3.1 | All | All | All |
| Application | Python | Python | 3.3.2 | All | All | All |
| Application | Python | Python | 3.3.3 | All | All | All |
| Application | Python | Python | 3.3.4 | All | All | All |
| Application | Python | Python | 3.3.5 | All | All | All |
| Application | Python | Python | 3.3.6 | All | All | All |
| Application | Python | Python | 3.4.0 | All | All | All |
| Application | Python | Python | 3.4.1 | All | All | All |
| Application | Python | Python | 3.4.2 | All | All | All |
| Application | Python | Python | 3.4.3 | All | All | All |
| Application | Python | Python | 3.4.4 | All | All | All |
| Application | Python | Python | 3.5.0 | All | All | All |
| Application | Python | Python | 3.5.1 | All | All | All |
| Application | Python | Python | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| hg.python.org/cpython/raw-file/v2.7.12/Misc/NEWS | af854a3a-2127-422b-91ae-364da2661108 | hg.python.org | Release Notes |
| Splunk Enterprise 6.4.5 addresses multiple vulnerabilities | Splunk | af854a3a-2127-422b-91ae-364da2661108 | www.splunk.com | |
| Issue 26171: heap overflow in zipimporter module - Python tracker | af854a3a-2127-422b-91ae-364da2661108 | bugs.python.org | Issue Tracking, Patch |
| Python CVE-2016-5636 Heap Buffer Overflow Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| Python: Multiple vulnerabilities (GLSA 201701-18) — Gentoo security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Changelog — Python 3.4.5 documentation | af854a3a-2127-422b-91ae-364da2661108 | docs.python.org | Release Notes |
| [security-announce] openSUSE-SU-2020:0086-1: important: Security update | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| oss-security - Re: CVE Request: heap overflow in Python zipimport module | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List |
| Oracle Solaris Bulletin - July 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | |
| [SECURITY] [DLA 1663-1] python3.4 security update | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| Changelog — Python 3.5.2 documentation | af854a3a-2127-422b-91ae-364da2661108 | docs.python.org | Release Notes |
| Apple macOS/OS X Multiple Flaws Let Remote Users Execute Arbitrary Code, Spoof URLs, and Obtain Potentially Sensitive Information and Let Local Users Modify Data and Gain Elevated Privileges - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| Splunk Enterprise 6.5.1 addresses multiple OpenSSL vulnerabilities | Splunk | af854a3a-2127-422b-91ae-364da2661108 | www.splunk.com | |
| oss-security - CVE Request: heap overflow in Python zipimport module | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | Mailing List |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 730315 Splunk Enterprise and Light Security Update (SP-CAAAPSV) (SPL-128812)