Disclosure summary
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.
Source-reported weakness categories
CWE-476
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2019-5010
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| python | python | * {"versionStartIncluding":"3.7.0","versionEndExcluding":"3.7.3"} |
| opensuse | leap | 15.1 |
| debian | debian_linux | 9.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux_eus | 8.1 |
| redhat | enterprise_linux_eus | 8.2 |
| redhat | enterprise_linux_eus | 8.4 |
| redhat | enterprise_linux_eus | 8.6 |
| redhat | enterprise_linux_server_aus | 8.2 |
| redhat | enterprise_linux_server_aus | 8.4 |
| redhat | enterprise_linux_server_aus | 8.6 |
| redhat | enterprise_linux_server_tus | 8.2 |
| redhat | enterprise_linux_server_tus | 8.4 |
| redhat | enterprise_linux_server_tus | 8.6 |
Original records & references
- NIST NVD record
- CVE Program record
- access.redhat.com — Third Party Advisory
- access.redhat.com — Third Party Advisory
- lists.apache.org
- lists.debian.org — Mailing List, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- security.gentoo.org — Third Party Advisory
- talosintelligence.com — Exploit, Third Party Advisory
- access.redhat.com — Third Party Advisory
- access.redhat.com — Third Party Advisory
- lists.apache.org
- lists.debian.org — Mailing List, Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- security.gentoo.org — Third Party Advisory
- talosintelligence.com — Exploit, Third Party Advisory
PUBLISHED 2019-10-31T17:15:13-04:00
MODIFIED 2026-10-07T15:17:14-04:00
INGESTED 2026-10-08T12:30:34-04:00