CVE-2026-4827 (GCVE-0-2026-4827)
Vulnerability from cvelistv5 – Published: 2026-05-12 12:24 – Updated: 2026-05-14 17:38
VLAI
EPSS
VEX
Title
Insufficient Entropy vulnerability on Multiple Products
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 12:39 UTC
CWE
- CWE-331 - Insufficient entropy
Assigner
References
1 reference
Impacted products
14 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Schneider Electric | Easergy MiCOM C264 |
Affected:
Versions D6.x
Affected: Versions D7.33 and prior |
guessed | |
| Schneider Electric | Easergy C5 |
Affected:
Version 1.1.17 and prior
|
guessed | |
| 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 |
guessed | |
| Schneider Electric | Easergy MiCOM P40 |
Affected:
Series model numbers with Protocol Option bit as G, H or L and all firmware versions
|
guessed | |
| Schneider Electric | EcoStruxure™ Power Automation System Gateway (EPAS-GTW) |
Affected:
Version 6.4.616.200.100 and prior
|
guessed | |
| Schneider Electric | EcoStruxure™ Power Automation System User Interface (EPAS-UI) |
Affected:
Version 3.0.3 and prior
|
guessed | |
| Schneider Electric | EcoStruxure™ Power Operation |
Affected:
Version 2022 CU6 and prior
Affected: Version 2024 CU2 and prior |
guessed | |
| Schneider Electric | iPMFLS |
Affected:
Version 64.2025.0.13 and prior
|
guessed | |
| Schneider Electric | PowerLogic™ P5 Protection Relay |
Affected:
V02.502.103 and prior
|
guessed | |
| Schneider Electric | PowerLogic™ P7 Protection and Control Platform |
Affected:
V02.002.002 and prior
|
guessed | |
| Schneider Electric | PowerLogic™ T300 |
Affected:
Version 2.9.4 and prior
|
guessed | |
| Schneider Electric | PowerLogic™ T500 |
Affected:
Version 11.08.02 and prior
|
guessed | |
| Schneider Electric | Saitel DP |
Affected:
Version 11.06.36 and prior
|
guessed | |
| Schneider Electric | EasyLogic T150 (formerly Saitel DR) |
Affected:
Version 11.06.30 and prior
|
guessed |
Date Public
2026-05-12 16:49
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},
{
"status": "affected",
"version": "P138 version prior to P138.677.700"
},
{
"status": "affected",
"version": "P436 version prior to P436.677.701"
},
{
"status": "affected",
"version": "P438 version prior to P438.677.701"
},
{
"status": "affected",
"version": "P638 version prior to P638.677.700"
},
{
"status": "affected",
"version": "C434 version prior to C434.679.700"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Easergy MiCOM P40",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Series model numbers with Protocol Option bit as G, H or L and all firmware versions"
}
]
},
{
"defaultStatus": "unaffected",
"product": "EcoStruxure\u2122 Power Automation System Gateway (EPAS-GTW)",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 6.4.616.200.100 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "EcoStruxure\u2122 Power Automation System User Interface (EPAS-UI)",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 3.0.3 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "EcoStruxure\u2122 Power Operation",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 2022 CU6 and prior"
},
{
"status": "affected",
"version": "Version 2024 CU2 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "iPMFLS",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 64.2025.0.13 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "PowerLogic\u2122 P5 Protection Relay",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "V02.502.103 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "PowerLogic\u2122 P7 Protection and Control Platform",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "V02.002.002 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "PowerLogic\u2122 T300",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 2.9.4 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "PowerLogic\u2122 T500",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 11.08.02 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Saitel DP",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 11.06.36 and prior"
}
]
},
{
"defaultStatus": "unaffected",
"product": "EasyLogic T150 (formerly Saitel DR)",
"vendor": "Schneider Electric",
"versions": [
{
"status": "affected",
"version": "Version 11.06.30 and prior"
}
]
}
],
"datePublic": "2026-05-12T16:49:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "CWE\u2011331: Insufficient Entropy vulnerability exists that could lead to unauthorized access when an attacker on the network can exploit weaknesses in session\u2011management protections."
}
],
"value": "CWE\u2011331: Insufficient Entropy vulnerability exists that could lead to unauthorized access when an attacker on the network can exploit weaknesses in session\u2011management protections."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-331",
"description": "CWE-331 Insufficient entropy",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-14T17:38:38.647Z",
"orgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb",
"shortName": "schneider"
},
"references": [
{
"url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2026-132-02\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2026-132-02.pdf"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Insufficient Entropy vulnerability on Multiple Products",
"x_generator": {
"engine": "Vulnogram 1.0.2"
}
}
},
"cveMetadata": {
"assignerOrgId": "076d1eb6-cfab-4401-b34d-6dfc2a413bdb",
"assignerShortName": "schneider",
"cveId": "CVE-2026-4827",
"datePublished": "2026-05-12T12:24:22.928Z",
"dateReserved": "2026-03-25T14:07:29.111Z",
"dateUpdated": "2026-05-14T17:38:38.647Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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