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Fencer Vulns
critical 9.0

CVE-2026-63017 json

Subnet Solutions PowerSYSTEM Center Incorrect Authorization

published 2026-11-06 3 d ago modified 2026-11-06 3 d ago also EUVD-2026-117880

cvss
9.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits
0
none known

Summary

Incorrect authorization in PowerSYSTEM Center allows a low-privileged, authenticated user to access resources normally limited to administrators.

Patch / fix

  • Subnet Solutions PowerSYSTEM Center 2020 Update 30
  • Subnet Solutions PowerSYSTEM Center 2024 PowerSYSTEM Center 2026 Update 1.1
  • Subnet Solutions PowerSYSTEM Center 2026 Update 1.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa vex ICSA-26-307-01 updated cvss 9.0

Subnet Solutions PowerSYSTEM Center

  • Subnet Solutions PowerSYSTEM Center 2020 <=5.29.x Subnet Solutions PowerSYSTEM Center 2024 >=6.0.x, <=6.2.x Subnet Solutions PowerSYSTEM Center 2026 >=7.0.x, <=7.1.x
    affected: mitigation

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.0 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA 4.0 9.4 CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CNA 4.0 9.4 CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Subnet Solutions PowerSYSTEM Center 2020
  • Subnet Solutions PowerSYSTEM Center 2024
  • Subnet Solutions PowerSYSTEM Center 2026

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.