Schneider Electric PowerLogic EGX100/PowerLogic EGX300 3.0.0 HTTP Packet denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Schneider Electric PowerLogic EGX100 and PowerLogic EGX300 3.0.0 (SCADA Software). It has been rated as problematic. This issue affects some unknown functionality of the component HTTP Packet Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. Impacted is availability. The summary by CVE is:

** UNSUPPORTED WHEN ASSIGNED ** 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.

The weakness was released 06/12/2021 as SEVD-2021-159-03. It is possible to read the advisory at The identification of this vulnerability is CVE-2021-22766 since 01/06/2021. The attack can only be initiated within the local network. A simple authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem.





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍


Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

0-Day Time: 🔒



01/06/2021 CVE assigned
06/12/2021 +156 days Advisory disclosed
06/12/2021 +0 days VulDB entry created
06/18/2021 +6 days VulDB last update



Advisory: SEVD-2021-159-03
Status: Confirmed

CVE: CVE-2021-22766 (🔒)


Created: 06/12/2021 11:39 AM
Updated: 06/18/2021 08:26 AM
Changes: (5) source_cve_assigned source_cve_nvd_summary vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_tempscore
Complete: 🔍


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