CVE-2019-5010

At a glance

Severity: MEDIUM 5.9
EPSS: EPSS 20.74 % · percentile 98 (2026-10-27)
State: PUBLISHED
Published: 2019-10-31
Updated: 2026-10-07
Assigner: talos
NVD status: Modified

Description

An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.

Scores

Version	Score	Vector	Scored by
CVSS 3.0	MEDIUM 5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	talos
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · nvd@nist.gov (Primary)
CVSS 3.0	MEDIUM 5.9	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	NVD · talos-cna@cisco.com (Secondary)
CVSS 2.0	MEDIUM 5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-476

European references

ENISA EUVD · EUVD-2019-14617
GCVE · GCVE-0-2019-5010

CERT-FR advisories

CERTFR-2022-AVI-267 — Multiples vulnérabilités dans Juniper Networks Junos Space · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 2.7.0 < 2.7.16
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.4.0 < 3.4.10
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.5.0 < 3.5.7
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.6.0 < 3.6.9
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* ≥ 3.7.0 < 3.7.3
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*

Affected products

Product	Versions
Python	affected Python.org CPython 2.7.11 Python.org CPython 3.6.6 Python.org CPython 3.5.2 Python.org CPython 3 master at 480833808e918a1dcebbbcfd07d5a8de3c5c2a66

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD