Vulnerability · Published May 12, 2026 · Assigned by schneider
CVE-2026-4827Insufficient Entropy vulnerability on Multiple Products
High 8.7
In plain English
A high-severity security flaw in Easergy C5 from Schneider Electric. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.3%top 75.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Schneider Electric | Easergy MiCOM C264 | Versions D6.xVersions D7.33 and prior |
| Schneider Electric | Easergy C5 | Version 1.1.17 and prior |
| Schneider Electric | Easergy MiCOM P30 | P139 version prior to P139.678.700P437 version prior to P437.678.700P439 version prior to P439.678.700P532 version prior to P532.678.700P539 version prior to P539.678.700P631 version prior to P631.678.700P632 version prior to P632.678.700P633 version prior to P633.678.700 |
| Schneider Electric | Easergy MiCOM P40 | 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) | Version 6.4.616.200.100 and prior |
| Schneider Electric | EcoStruxure™ Power Automation System User Interface (EPAS-UI) | Version 3.0.3 and prior |
| Schneider Electric | EcoStruxure™ Power Operation | Version 2022 CU6 and priorVersion 2024 CU2 and prior |
| Schneider Electric | iPMFLS | Version 64.2025.0.13 and prior |
| Schneider Electric | PowerLogic™ P5 Protection Relay | V02.502.103 and prior |
| Schneider Electric | PowerLogic™ P7 Protection and Control Platform | V02.002.002 and prior |
| Schneider Electric | PowerLogic™ T300 | Version 2.9.4 and prior |
| Schneider Electric | PowerLogic™ T500 | Version 11.08.02 and prior |
| Schneider Electric | Saitel DP | Version 11.06.36 and prior |
| Schneider Electric | EasyLogic T150 (formerly Saitel DR) | Version 11.06.30 and prior |
Weakness: CWE-331 · Vector: 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