What is CVE-2021-22777?

CVE-2021-22777 is a high-severity vulnerability in Schneider-Electric Sosafe Configurable, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2021-07-21.

How severe is CVE-2021-22777?

High severity. CVSS v3 base score is 7.8 out of 10.

Deserialization in Schneider-Electric Sosafe Configurable

CVE-2021-22777

A CWE-502: Deserialization of Untrusted Data vulnerability exists that could cause code execution by opening a malicious project file.

Vulnerability class: Insecure Deserialization

Published 2021-07-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.8th percentile), scored 2026-10-08.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Schneider-Electric Sosafe Configurable
Sosafe Configurable Prior To V1.8.1 — versions SoSafe Configurable prior to V1.8.1

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

download.schneider-electric.com/files (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22777?: CVE-2021-22777 is a high-severity vulnerability in Schneider-Electric Sosafe Configurable, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2021-07-21.
How severe is CVE-2021-22777?: High severity. CVSS v3 base score is 7.8 out of 10.