Schneider Electric PowerLogic EGX300 Modbus TCP Protocol improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Schneider Electric PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300. This impacts an unknown function of the component Modbus TCP Protocol Handler. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2021-22764. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Schneider Electric PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (SCADA Software) (affected version not known). It has been classified as critical. This affects some unknown functionality of the component Modbus TCP Protocol Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 06/12/2021 as SEVD-2021-159-03. It is possible to read the advisory at download.schneider-electric.com. This vulnerability is uniquely identified as CVE-2021-22764. The technical details are unknown and an exploit is not publicly available.

Applying a patch is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

ADP CISA Base Score: 5.3
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/06/2021 🔍
06/12/2021 +156 days 🔍
06/12/2021 +0 days 🔍
05/30/2026 +1813 days 🔍

Sourcesinfo

Vendor: schneider-electric.com

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

CVE: CVE-2021-22764 (🔍)
GCVE (CVE): GCVE-0-2021-22764
GCVE (VulDB): GCVE-100-176955

Entryinfo

Created: 06/12/2021 08:00
Updated: 05/30/2026 20:24
Changes: 06/12/2021 08:00 (38), 06/14/2021 13:16 (5), 11/24/2024 16:47 (33), 05/30/2026 20:24 (11)
Complete: 🔍
Cache ID: 216::103

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