CVE-2020-14422
No exploitation reported by the sources we read.
- Published2020-06-18
- Fixed in3.8.4 · 3.7.9 · 3.6.12 · 3.5.10
- WeaknessCWE-330 · CWE-682
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.
Timeline
dates in UTC- 2020-06-1814:15CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-14422?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-14422?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 3.8 | ≥ 3.8.0, < 3.8.4 | 3.8.4 | NVD |
| 3.7 | ≥ 3.7.0, < 3.7.9 | 3.7.9 | NVD |
| 3.6 | ≥ 3.6.0, < 3.6.12 | 3.6.12 | NVD |
| 3.x | ≥ 3.0.0, < 3.5.10 | 3.5.10 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 31.x | = 31 | no fix published | NVD |
| 32.x | = 32 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.1 | = 15.1 | no fix published | NVD |
| 15.2 | = 15.2 | no fix published | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Python to 3.8.4 · 3.7.9 · 3.6.12 · 3.5.10
Advisories and patches
- bugs.python.orgVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2020-06-18
- Last Modified
- 2026-10-14
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-14422?
Is CVE-2020-14422 actively exploited?
What is the CVSS score for CVE-2020-14422?
Hear about the next vulnerability in your software
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
No credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.