CVE-2021-22766

Name: CVE-2021-22766
Creator: NVD / NIST
Published: 2021-06-11T16:15:10.523+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.28%

Last modified Jun 17, 2026

CVE-2021-22766 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions) that could cause denial of service via a specially crafted HTTP packet. EPSS estimates a 1.28% chance of exploitation in the next 30 days.

Description

A CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions) that could cause denial of service via a specially crafted HTTP packet

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.28%

66.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Schneider-Electric	Powerlogic Egx100 Firmware	>= 3.0.0
Schneider-Electric	Powerlogic Egx300 Firmware	All versions

References

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-03Vendor Advisory
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-03Vendor Advisory

Timeline

Published: Jun 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22766?

How severe is CVE-2021-22766?

CVE-2021-22766 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22766?

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-2021-22766?

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

Scan your code now

Source: NVD / NIST