VDE-2025-066
Vulnerability from csaf_smasolartechnologyag - Published: 2025-08-27 08:00 - Updated: 2025-08-27 08:00Summary
SMA: Directory Traversal in Sunny Boy
Notes
Summary: A security researcher discovered a Directory Traversal vulnerability in Sunny Boy 3, which allows remote attackers to access sensitive information.
The vulnerability is already fixed since January 2021 with version 3.10.27.R.
Impact: An authenticated user can access files and directories outside the intended web root.
Remediation: Update Firmware to at least version 3.10.27.R.
An authorized remote attacker can access files and directories outside the intended web root, potentially exposing sensitive system information of the affected Sunny Boy devices.
6.5 (Medium)
Vendor Fix
Update Firmware to version 3.10.27.R or newer.
Affected products
Fixed
5 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: CSAFPID-32001 | — | ||
| Unresolved product id: CSAFPID-32002 | — | ||
| Unresolved product id: CSAFPID-32003 | — | ||
| Unresolved product id: CSAFPID-32004 | — | ||
| Unresolved product id: CSAFPID-32005 | — |
Known affected
5 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: CSAFPID-31001 | — | ||
| Unresolved product id: CSAFPID-31002 | — | ||
| Unresolved product id: CSAFPID-31003 | — | ||
| Unresolved product id: CSAFPID-31004 | — | ||
| Unresolved product id: CSAFPID-31005 | — |
References
4 references
Acknowledgments
{
"document": {
"acknowledgments": [
{
"organization": "CERT@VDE",
"summary": "coordination",
"urls": [
"https://certvde.com"
]
},
{
"names": [
"Ahmed Alroky"
],
"organization": " KOIN Network",
"summary": "reporting"
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-GB",
"notes": [
{
"category": "summary",
"text": "A security researcher discovered a Directory Traversal vulnerability in Sunny Boy 3, which allows remote attackers to access sensitive information. \nThe vulnerability is already fixed since January 2021 with version 3.10.27.R. ",
"title": "Summary"
},
{
"category": "description",
"text": "An authenticated user can access files and directories outside the intended web root.",
"title": "Impact"
},
{
"category": "description",
"text": "Update Firmware to at least version 3.10.27.R.",
"title": "Remediation"
}
],
"publisher": {
"category": "vendor",
"contact_details": "information-security@sma.de",
"name": "SMA Solar Technology AG",
"namespace": "https://sma.de"
},
"references": [
{
"category": "external",
"summary": "SMA PSIRT",
"url": "https://www.sma.de/cybersicherheit/produktsicherheit"
},
{
"category": "external",
"summary": "CERT@VDE Security Advisories for SMA",
"url": "https://certvde.com/en/advisories/vendor/sma/"
},
{
"category": "self",
"summary": "VDE-2025-066: SMA: Directory Traversal in Sunny Boy - HTML",
"url": "https://certvde.com/en/advisories/VDE-2025-066"
},
{
"category": "self",
"summary": "VDE-2025-066: SMA: Directory Traversal in Sunny Boy - CSAF",
"url": "https://sma.csaf-tp.certvde.com/.well-known/csaf/white/2025/vde-2025-066.json"
}
],
"title": "SMA: Directory Traversal in Sunny Boy",
"tracking": {
"aliases": [
"VDE-2025-066"
],
"current_release_date": "2025-08-27T08:00:00.000Z",
"generator": {
"date": "2025-08-21T09:10:39.333Z",
"engine": {
"name": "Secvisogram",
"version": "2.5.33"
}
},
"id": "VDE-2025-066",
"initial_release_date": "2025-08-27T08:00:00.000Z",
"revision_history": [
{
"date": "2025-08-27T08:00:00.000Z",
"number": "1.0.0",
"summary": "Initial revision."
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Sunny Boy 3.0",
"product": {
"name": "Sunny Boy 3.0",
"product_id": "CSAFPID-11001",
"product_identification_helper": {
"model_numbers": [
"SB3.0-1AV-41"
]
}
}
},
{
"category": "product_name",
"name": "Sunny Boy 3.6",
"product": {
"name": "Sunny Boy 3.6",
"product_id": "CSAFPID-11002",
"product_identification_helper": {
"model_numbers": [
"SB3.6-1AV-41"
]
}
}
},
{
"category": "product_name",
"name": "Sunny Boy 4.0",
"product": {
"name": "Sunny Boy 4.0",
"product_id": "CSAFPID-11003",
"product_identification_helper": {
"model_numbers": [
"SB4.0-1AV-41"
]
}
}
},
{
"category": "product_name",
"name": "Sunny Boy 5.0",
"product": {
"name": "Sunny Boy 5.0",
"product_id": "CSAFPID-11004",
"product_identification_helper": {
"model_numbers": [
"SB5.0-1AV-41"
]
}
}
},
{
"category": "product_name",
"name": "Sunny Boy 6.0",
"product": {
"name": "Sunny Boy 6.0",
"product_id": "CSAFPID-11005",
"product_identification_helper": {
"model_numbers": [
"SB6.0-1AV-41"
]
}
}
}
],
"category": "product_family",
"name": "Sony Boy"
}
],
"category": "product_family",
"name": "Hardware"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c3.10.27.R",
"product": {
"name": "Firmware \u003c3.10.27.R",
"product_id": "CSAFPID-21001"
}
},
{
"category": "product_version",
"name": "3.10.27.R",
"product": {
"name": "Firmware 3.10.27.R",
"product_id": "CSAFPID-22001"
}
}
],
"category": "product_family",
"name": "Firmware"
}
],
"category": "vendor",
"name": "SMA Solar Technology AG"
}
],
"product_groups": [
{
"group_id": "CSAFGID-0001",
"product_ids": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005"
],
"summary": "Affected products."
},
{
"group_id": "CSAFGID-0002",
"product_ids": [
"CSAFPID-32001",
"CSAFPID-32002",
"CSAFPID-32003",
"CSAFPID-32004",
"CSAFPID-32005"
],
"summary": "Fixed products."
}
],
"relationships": [
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c3.10.27.R installed on Sunny Boy 3.0",
"product_id": "CSAFPID-31001"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c3.10.27.R installed on Sunny Boy 3.6",
"product_id": "CSAFPID-31002"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c3.10.27.R installed on Sunny Boy 4.0",
"product_id": "CSAFPID-31003"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c3.10.27.R installed on Sunny Boy 5.0",
"product_id": "CSAFPID-31004"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c3.10.27.R installed on Sunny Boy 6.0",
"product_id": "CSAFPID-31005"
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11005"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.10.27.R installed on Sunny Boy 3.0",
"product_id": "CSAFPID-32001"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.10.27.R installed on Sunny Boy 3.6",
"product_id": "CSAFPID-32002"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.10.27.R installed on Sunny Boy 4.0",
"product_id": "CSAFPID-32003"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.10.27.R installed on Sunny Boy 5.0",
"product_id": "CSAFPID-32004"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.10.27.R installed on Sunny Boy 6.0",
"product_id": "CSAFPID-32005"
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11005"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-4459",
"cwe": {
"id": "CWE-23",
"name": "Relative Path Traversal"
},
"notes": [
{
"audience": "all",
"category": "description",
"text": "An authorized remote attacker can access files and directories outside the intended web root, potentially exposing sensitive system information of the affected Sunny Boy devices. ",
"title": "Vulnerability Description"
}
],
"product_status": {
"fixed": [
"CSAFPID-32001",
"CSAFPID-32002",
"CSAFPID-32003",
"CSAFPID-32004",
"CSAFPID-32005"
],
"known_affected": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005"
]
},
"remediations": [
{
"category": "vendor_fix",
"details": "Update Firmware to version 3.10.27.R or newer.",
"group_ids": [
"CSAFGID-0001"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"environmentalScore": 6.5,
"environmentalSeverity": "MEDIUM",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"temporalScore": 6.5,
"temporalSeverity": "MEDIUM",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"CSAFPID-31001",
"CSAFPID-31002",
"CSAFPID-31003",
"CSAFPID-31004",
"CSAFPID-31005"
]
}
],
"title": "CVE-2021-4459"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
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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
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