CVE-2021-22764

MEDIUM

PowerLogic - Improper Authentication

Title source: llm

Description

A CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (see security notification for version infromation) that could cause loss of connectivity to the device via Modbus TCP protocol when an attacker sends a specially crafted HTTP request.

References (2)

Core 2

Core References

Various Sources

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-02%2Chttp://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-03

Various Sources x_refsource_misc

https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-02&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2021-159-02.pdf

Scores

CVSS v3 5.3

EPSS 0.0186

EPSS Percentile 76.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-287

Status published

Products (5)

None/PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation) PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version i

schneider-electric/powerlogic_pm5560_firmware < 2.7.8

schneider-electric/powerlogic_pm5561_firmware < 10.7.3

schneider-electric/powerlogic_pm5562_firmware < 2.5.4

schneider-electric/powerlogic_pm5563_firmware < 2.7.8

Published Jun 11, 2021

Tracked Since Feb 18, 2026