CVE-2026-4827
Insufficient Entropy vulnerability on Multiple Products
- Published
- Updated
- Reserved
- Assigned by
- schneider
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| schneiderCNA (assigner) | 4.0 | High8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N |
| NVDNVD · Awaiting Analysis | 4.0 | High8.7 | CVSS: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 |
- EPSS (exploitation in 30 days)
- 0.31% · top 76% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.
Weakness
Affected products
Schneider Electric · Easergy MiCOM C264
- affected Versions D6.x
- affected Versions D7.33 and prior
Schneider Electric · Easergy C5
- affected Version 1.1.17 and prior
Schneider Electric · Easergy MiCOM P30
- affected P139 version prior to P139.678.700
- affected P437 version prior to P437.678.700
- affected P439 version prior to P439.678.700
- affected P532 version prior to P532.678.700
- affected P539 version prior to P539.678.700
- affected P631 version prior to P631.678.700
- affected P632 version prior to P632.678.700
- affected P633 version prior to P633.678.700
- affected P634 version prior to P634.678.700
- affected P633 version P633.680.700 only
- affected P634 version P634.680.700 only
- affected P138 version prior to P138.677.700
- affected P436 version prior to P436.677.701
- affected P438 version prior to P438.677.701
- affected P638 version prior to P638.677.700
- affected C434 version prior to C434.679.700
Schneider Electric · Easergy MiCOM P40
- affected Series model numbers with Protocol Option bit as G, H or L and all firmware versions
Schneider Electric · EcoStruxure™ Power Automation System Gateway (EPAS-GTW)
- affected Version 6.4.616.200.100 and prior
Schneider Electric · EcoStruxure™ Power Automation System User Interface (EPAS-UI)
- affected Version 3.0.3 and prior
Schneider Electric · EcoStruxure™ Power Operation
- affected Version 2022 CU6 and prior
- affected Version 2024 CU2 and prior
- affected Version 64.2025.0.13 and prior
Schneider Electric · PowerLogic™ P5 Protection Relay
- affected V02.502.103 and prior
Schneider Electric · PowerLogic™ P7 Protection and Control Platform
- affected V02.002.002 and prior
Schneider Electric · PowerLogic™ T300
- affected Version 2.9.4 and prior
Schneider Electric · PowerLogic™ T500
- affected Version 11.08.02 and prior
Schneider Electric · Saitel DP
- affected Version 11.06.36 and prior
Schneider Electric · EasyLogic T150 (formerly Saitel DR)
- affected Version 11.06.30 and prior
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-4827)Record last updated .