Subnet Solutions PowerSYSTEM Center 2026 up to 5.28.x REST API Endpoint authorization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Subnet Solutions PowerSYSTEM Center 2020, PowerSYSTEM Center 2024 and PowerSYSTEM Center 2026 up to 5.28.x and classified as problematic. This impacts an unknown function of the component REST API Endpoint. Such manipulation leads to authorization. This vulnerability is documented as CVE-2026-26289. The attack requires being on the local network. There is not any exploit available.

Detailsinfo

A vulnerability was found in Subnet Solutions PowerSYSTEM Center 2020, PowerSYSTEM Center 2024 and PowerSYSTEM Center 2026 up to 5.28.x and classified as problematic. Affected by this issue is an unknown code of the component REST API Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was released by Kelly Stich as icsa-26-132-02. The advisory is shared for download at cisa.gov. This vulnerability is handled as CVE-2026-26289 since 04/16/2026. The exploitation is known to be easy. The attack needs to be initiated within the local network. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/12/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.2
CNA Vector (icscert): 🔒

CVSSv2info

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

Exploitinginfo

Class: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

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: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2026 CVE reserved
05/12/2026 +26 days Advisory disclosed
05/12/2026 +0 days VulDB entry created
05/12/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: icsa-26-132-02
Researcher: Kelly Stich
Status: Not defined

CVE: CVE-2026-26289 (🔒)
GCVE (CVE): GCVE-0-2026-26289
GCVE (VulDB): GCVE-100-363416

Entryinfo

Created: 05/12/2026 23:23
Changes: 05/12/2026 23:23 (75)
Complete: 🔍
Cache ID: 216::103

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