How severe is CVE-2021-31222?

Medium severity. CVSS v3 base score is 5.7 out of 10.

Vulnerability in Stormshield Endpoint Security

CVE-2021-31222

SES Evolution before 2.1.0 allows updating some parts of a security policy by leveraging access to a computer having the administration console installed.

Published 2021-07-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (37.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Stormshield Endpoint Security

References

advisories.stormshield.eu (Vendor Advisory)
advisories.stormshield.eu/2021-024/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-31222?: CVE-2021-31222 is a medium-severity vulnerability in Stormshield Endpoint Security. CVSS score: 5.7/10. Published 2021-07-13.
How severe is CVE-2021-31222?: Medium severity. CVSS v3 base score is 5.7 out of 10.