CVE-2026-4827

HighCVSS 8.7/10Last modified Oct 26, 2026

Description

CWE‑331: Insufficient Entropy vulnerability exists that could lead to unauthorized access when an attacker on the network can exploit weaknesses in session‑management protections.

Metrics

CVSS 4.0 8.7/10CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/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

Weakness enumeration

CWE-331

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
Schneider ElectricEasergy MiCOM C264Versions D6.x; Versions D7.33 and prior
Schneider ElectricEasergy C5Version 1.1.17 and prior
Schneider ElectricEasergy MiCOM P30P139 version prior to P139.678.700; P437 version prior to P437.678.700; P439 version prior to P439.678.700; P532 version prior to P532.678.700; P539 version prior to P539.678.700; P631 version prior to P631.678.700; P632 version prior to P632.678.700; P633 version prior to P633.678.700; P634 version prior to P634.678.700; P633 version P633.680.700 only; P634 version P634.680.700 only; P138 version prior to P138.677.700; P436 version prior to P436.677.701; P438 version prior to P438.677.701; P638 version prior to P638.677.700; C434 version prior to C434.679.700
Schneider ElectricEasergy MiCOM P40Series model numbers with Protocol Option bit as G, H or L and all firmware versions
Schneider ElectricEcoStruxure™ Power Automation System Gateway (EPAS-GTW)Version 6.4.616.200.100 and prior
Schneider ElectricEcoStruxure™ Power Automation System User Interface (EPAS-UI)Version 3.0.3 and prior
Schneider ElectricEcoStruxure™ Power OperationVersion 2022 CU6 and prior; Version 2024 CU2 and prior
Schneider ElectriciPMFLSVersion 64.2025.0.13 and prior
Schneider ElectricPowerLogic™ P5 Protection RelayV02.502.103 and prior
Schneider ElectricPowerLogic™ P7 Protection and Control PlatformV02.002.002 and prior
Schneider ElectricPowerLogic™ T300Version 2.9.4 and prior
Schneider ElectricPowerLogic™ T500Version 11.08.02 and prior
Schneider ElectricSaitel DPVersion 11.06.36 and prior
Schneider ElectricEasyLogic T150 (formerly Saitel DR)Version 11.06.30 and prior

References

Timeline

Published
May 12, 2026
Last modified
Oct 26, 2026
NVD status
Awaiting Analysis

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CVE-2026-4827: High severity, CVSS 8.7 | Vulnix