CVE-2021-22777

Name: CVE-2021-22777
Creator: NVD / NIST
Published: 2021-07-21T15:15:15.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.94%

Last modified Jun 17, 2026

CVE-2021-22777 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A CWE-502: Deserialization of Untrusted Data vulnerability exists that could cause code execution by opening a malicious project file.. EPSS estimates a 0.94% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.94%

56.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Schneider-Electric	Sosafe Configurable	< 1.8.1

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-03Vendor Advisory
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-194-03Vendor Advisory

Timeline

Published: Jul 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22777?

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

How severe is CVE-2021-22777?

CVE-2021-22777 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.94% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22777?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22777?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST