What is CVE-2021-26991?

CVE-2021-26991 is a high-severity vulnerability in NetApp Cloud Manager. CVSS score: 7.5/10. Published 2021-03-19.

How severe is CVE-2021-26991?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in NetApp Cloud Manager

CVE-2021-26991

Cloud Manager versions prior to 3.9.4 contain an insecure Cross-Origin Resource Sharing (CORS) policy which could allow a remote attacker to interact with Cloud Manager.

Published 2021-03-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.013 (70.5th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.001

Affected products

NetApp Cloud Manager
Cloud Manager — versions Prior to 3.9.4

References

security.netapp.com/advisory/NTAP-20210318-0002 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2021-26991?: CVE-2021-26991 is a high-severity vulnerability in NetApp Cloud Manager. CVSS score: 7.5/10. Published 2021-03-19.
How severe is CVE-2021-26991?: High severity. CVSS v3 base score is 7.5 out of 10.