What is CVE-2021-36776?

CVE-2021-36776 is a high-severity vulnerability in Rancher, classified under Improper Access Control. CVSS score: 8.8/10. Published 2022-04-04.

How severe is CVE-2021-36776?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Rancher

CVE-2021-36776

A Improper Access Control vulnerability in SUSE Rancher allows remote attackers impersonate arbitrary users. This issue affects: SUSE Rancher Rancher versions prior to 2.5.10.

Published 2022-04-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.9% 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: 0.011 · change: 0.000

Affected products

Rancher
SUSE Rancher — versions Rancher

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

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

Frequently asked questions

What is CVE-2021-36776?: CVE-2021-36776 is a high-severity vulnerability in Rancher, classified under Improper Access Control. CVSS score: 8.8/10. Published 2022-04-04.
How severe is CVE-2021-36776?: High severity. CVSS v3 base score is 8.8 out of 10.