What is CVE-2020-1722?

CVE-2020-1722 is a medium-severity vulnerability in Freeipa, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2020-04-27.

How severe is CVE-2020-1722?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Freeipa

CVE-2020-1722

A flaw was found in all ipa versions 4.x.x through 4.8.0. When sending a very long password (>= 1,000,000 characters) to the server, the password hashing process could exhaust memory and CPU leading to a denial of service and the website becoming unresponsive. The highest threat from this vulnerability is to system availability.

Vulnerability class: DoS (Denial of Service)

Published 2020-04-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.002

Affected products

Freeipa
Red Hat Ipa — versions all ipa versions 4.x.x through 4.8.0
Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-1722?: CVE-2020-1722 is a medium-severity vulnerability in Freeipa, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2020-04-27.
How severe is CVE-2020-1722?: Medium severity. CVSS v3 base score is 5.3 out of 10.