Subnet Solutions PowerSYSTEM Center
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an authenticated attacker to expose sensitive information or cause a CRLF injection.
The following versions of Subnet Solutions PowerSYSTEM Center are affected:
PowerSYSTEM Center 2020 <=5.28.x (CVE-2026-35504)
PowerSYSTEM Center 2020 >=5.8.x|<=5.28.x (CVE-2026-26289)
PowerSYSTEM Center 2020 >=5.11.x|<=5.28.x (CVE-2026-33570)
PowerSYSTEM Center 2024 >=6.0.x|<=6.1.x (CVE-2026-26289, CVE-2026-35555, CVE-2026-35504)
PowerSYSTEM Center 2026 7.0.x (CVE-2026-26289, CVE-2026-35555, CVE-2026-35504)
CVSS
Vendor
Equipment
Vulnerabilities
v3 8.2
Subnet Solutions Inc.
Subnet Solutions PowerSYSTEM Center
Incorrect Authorization, Improper Neutralization of CRLF Sequences ('CRLF Injection')
Background
Critical Infrastructure Sectors: Critical Manufacturing, Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Canada
Vulnerabilities
Expand All +
CVE-2026-26289
PowerSYSTEM Center REST API endpoint for device account export allows an authenticated user with limited permissions to expose sensitive information normally restricted to administrative permissions only.
View CVE Details
Affected Products
Subnet Solutions PowerSYSTEM Center
Vendor:Subnet Solutions Inc.
Product Version:Subnet Solutions Inc. PowerSYSTEM Center 2020: >=5.8.x|<=5.28.x, Subnet Solutions Inc. PowerSYSTEM Center 2024: >=6.0.x|<=6.1.x, Subnet Solutions Inc. PowerSYSTEM Center 2026: 7.0.x
Product Status:known_affected
Remediations
MitigationSubnet Solutions recommends users update to the latest version of PowerSYSTEM Center PSC 2020 Update 29, PSC 2024 Update 2, and PSC 2026 GA Hotfix.
MitigationFor assistance in upgrading, users should contact a Subnet Solutions System Integration team member or customer support team at (403) 270-8885 or by email at
support@subnet.com.mailto:
support@subnet.com
MitigationSubnet Solutions recommends users do the following in order to reduce risk:Monitor user activity records to ensure users are following acceptable usage policies of the application.Restrict access to Notification Settings to trusted Administrators Monitor "Send from Address" in settings and Activity Records.Configure a notification rule that triggers in any bulk account export activity.
Relevant CWE: CWE-863 Incorrect Authorization
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
8.2
HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
CVE-2026-33570
PowerSYSTEM Center REST API endpoint for devices allows a low privilege authenticated user to access information normally limited by operational permissions.
View CVE Details
Affected Products
Subnet Solutions PowerSYSTEM Center
Vendor:Subnet Solutions Inc.
Product Version:Subnet Solutions Inc. PowerSYSTEM Center 2020: >=5.11.x|<=5.28.x
Product Status:known_affected
Remediations
MitigationSubnet Solutions recommends users update to the latest version of PowerSYSTEM Center PSC 2020 Update 29, PSC 2024 Update 2, and PSC 2026 GA Hotfix.
MitigationFor assistance in upgrading, users should contact a Subnet Solutions System Integration team member or customer support team at (403) 270-8885 or by email at
support@subnet.com.mailto:
support@subnet.com
MitigationSubnet Solutions recommends users do the following in order to reduce risk:Monitor user activity records to ensure users are following acceptable usage policies of the application.Restrict access to Notification Settings to trusted Administrators Monitor "Send from Address" in settings and Activity Records.Configure a notification rule that triggers in any bulk account export activity.
Relevant CWE: CWE-863 Incorrect Authorization
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
5.7
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVE-2026-35555
PowerSYSTEM Center feature for device project groups allows an authenticated user with limited permissions to perform an unauthorized deletion of project groups.
View CVE Details
Affected Products
Subnet Solutions PowerSYSTEM Center
Vendor:Subnet Solutions Inc.
Product Version:Subnet Solutions Inc. PowerSYSTEM Center 2024: >=6.0.x|<=6.1.x, Subnet Solutions Inc. PowerSYSTEM Center 2026: 7.0.x
Product Status:known_affected
Remediations
MitigationSubnet Solutions recommends users update to the latest version of PowerSYSTEM Center PSC 2020 Update 29, PSC 2024 Update 2, and PSC 2026 GA Hotfix.
MitigationFor assistance in upgrading, users should contact a Subnet Solutions System Integration team member or customer support team at (403) 270-8885 or by email at
support@subnet.com.mailto:
support@subnet.com
MitigationSubnet Solutions recommends users do the following in order to reduce risk:Monitor user activity records to ensure users are following acceptable usage policies of the application.Restrict access to Notification Settings to trusted Administrators Monitor "Send from Address" in settings and Activity Records.Configure a notification rule that triggers in any bulk account export activity.
Relevant CWE: CWE-863 Incorrect Authorization
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
6.3
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
CVE-2026-35504
PowerSYSTEM Center email notification service is affected by a CRLF injection vulnerability when using SMTPS communication.
View CVE Details
Affected Products
Subnet Solutions PowerSYSTEM Center
Vendor:Subnet Solutions Inc.
Product Version:Subnet Solutions Inc. PowerSYSTEM Center 2020: <=5.28.x, Subnet Solutions Inc. PowerSYSTEM Center 2024: >=6.0.x|<=6.1.x, Subnet Solutions Inc. PowerSYSTEM Center 2026: 7.0.x
Product Status:known_affected
Remediations
MitigationSubnet Solutions recommends users update to the latest version of PowerSYSTEM Center PSC 2020 Update 29, PSC 2024 Update 2, and PSC 2026 GA Hotfix.
MitigationFor assistance in upgrading, users should contact a Subnet Solutions System Integration team member or customer support team at (403) 270-8885 or by email at
support@subnet.com.mailto:
support@subnet.com
MitigationSubnet Solutions recommends users do the following in order to reduce risk:Monitor user activity records to ensure users are following acceptable usage policies of the application.Restrict access to Notification Settings to trusted Administrators Monitor "Send from Address" in settings and Activity Records.Configure a notification rule that triggers in any bulk account export activity.
Relevant CWE: CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
5.5
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Acknowledgments
Kelly Stich of Subnet Solutions Inc reported these vulnerabilities to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (
https://www.cisa.gov/notification) and this Privacy & Use policy (
https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.
Revision History
Initial Release Date: 2026-05-12
Date
Revision
Summary
2026-05-12
1
Initial Publication
Legal Notice and Terms of Use
https://www.cisa.gov/news-events/ics-advisories/icsa-26-132-02
2026-05-12 12:00 UTC
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* Origin: TCOB1 A Mail Only System (2:263/1)