VDE-2026-059
Vulnerability from csaf_helmholzgmbhcokg - Published: 2026-05-27 11:00 - Updated: 2026-05-27 11:00Summary
Helmholz: Multiple vulnerabilities in REX100/REX200/REX250
Severity
High
Notes
Summary: Two command injection vulnerabilities have been discovered in Helmholz REX100/REX200/REX250.
Impact: The vulnerabilities allow for command injection in REX100/REX200/REX250 with varying prerequisites resulting in full system compromise.
Remediation: Update:
- REX200/REX250: 8.4.5
- REX100: 3.0.3
A low privileged local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
8.4 (High)
Vendor Fix
Update:
- REX200/250: 8.4.5
- REX100: 3.0.3
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: CSAFPID-31011 | — | ||
| Unresolved product id: CSAFPID-31012 | — |
Known affected
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: CSAFPID-31007 | — | ||
| Unresolved product id: CSAFPID-31008 | — | ||
| Unresolved product id: CSAFPID-31009 | — | ||
| Unresolved product id: CSAFPID-31010 | — |
A high privileged attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
7.2 (High)
Vendor Fix
Update:
- REX200/250: 8.4.5
- REX100: 3.0.3
Affected products
Fixed
2 products, the same list as for
CVE-2026-40851
Known affected
4 products, the same list as for
CVE-2026-40851
References
5 references
Acknowledgments
{
"document": {
"acknowledgments": [
{
"organization": "CERT@VDE",
"summary": "coordination",
"urls": [
"https://certvde.com"
]
},
{
"names": [
"Moritz Abrell",
"Christian Z\u00e4ske"
],
"organization": "SySS GmbH",
"summary": "reporting",
"urls": [
"https://www.syss.de"
]
}
],
"aggregate_severity": {
"namespace": "https://www.first.org/cvss/v3.1/specification-document#Qualitative-Severity-Rating-Scale",
"text": "High"
},
"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": "Two command injection vulnerabilities have been discovered in Helmholz REX100/REX200/REX250.",
"title": "Summary"
},
{
"category": "description",
"text": "The vulnerabilities allow for command injection in REX100/REX200/REX250 with varying prerequisites resulting in full system compromise.\n\n",
"title": "Impact"
},
{
"category": "description",
"text": "Update:\n\n- REX200/REX250: 8.4.5\n- REX100: 3.0.3",
"title": "Remediation"
}
],
"publisher": {
"category": "vendor",
"contact_details": "psirt@helmholz.de",
"name": "Helmholz GmbH \u0026 Co. KG",
"namespace": "https://www.helmholz.de"
},
"references": [
{
"category": "external",
"summary": "CERT@VDE Security Advisories for Helmholz",
"url": "https://certvde.com/en/advisories/vendor/helmholz"
},
{
"category": "self",
"summary": "VDE-2026-059: Helmholz: Multiple vulnerabilities in REX100/REX200/REX250 - HTML",
"url": "https://certvde.com/en/advisories/VDE-2026-059"
},
{
"category": "self",
"summary": "VDE-2026-059: Helmholz: Multiple vulnerabilities in REX100/REX200/REX250 - CSAF",
"url": "https://helmholz.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-059.json"
}
],
"title": "Helmholz: Multiple vulnerabilities in REX100/REX200/REX250",
"tracking": {
"aliases": [
"VDE-2026-059",
"SIM#2026-01-2"
],
"current_release_date": "2026-05-27T11:00:00.000Z",
"generator": {
"date": "2026-05-27T13:03:54.275Z",
"engine": {
"name": "Secvisogram",
"version": "2.5.44"
}
},
"id": "VDE-2026-059",
"initial_release_date": "2026-05-27T11:00:00.000Z",
"revision_history": [
{
"date": "2026-05-27T11:00:00.000Z",
"number": "1.0.0",
"summary": "Initial revision."
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "REX200/250",
"product": {
"name": "Helmholz REX200/250",
"product_id": "CSAFPID-11003",
"product_identification_helper": {
"cpe": "cpe:2.3:h:helmholz:rex200_250:*:*:*:*:*:*:*:*"
}
}
},
{
"category": "product_name",
"name": "REX100",
"product": {
"name": "Helmholz REX100",
"product_id": "CSAFPID-11004",
"product_identification_helper": {
"cpe": "cpe:2.3:h:helmholz:rex100:*:*:*:*:*:*:*:*"
}
}
}
],
"category": "product_family",
"name": "Hardware"
},
{
"branches": [
{
"category": "product_version_range",
"name": "vers:semver/\u003c=8.4.4",
"product": {
"name": "Firmware \u003c=8.4.4",
"product_id": "CSAFPID-21004"
}
},
{
"category": "product_version",
"name": "8.4.5",
"product": {
"name": "Firmware 8.4.5",
"product_id": "CSAFPID-21005",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex200_firmware:8.4.5:*:*:*:*:*:*:*"
}
}
},
{
"category": "product_version",
"name": "8.4.4",
"product": {
"name": "Firmware 8.4.4",
"product_id": "CSAFPID-21006",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex200_firmware:8.4.4:*:*:*:*:*:*:*"
}
}
},
{
"category": "product_version_range",
"name": "vers:semver/\u003c=3.0.2",
"product": {
"name": "Firmware \u003c=3.0.2",
"product_id": "CSAFPID-21007"
}
},
{
"category": "product_version",
"name": "3.0.3",
"product": {
"name": "Firmware 3.0.3",
"product_id": "CSAFPID-21008",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex100_firmware:3.0.3:*:*:*:*:*:*:*"
}
}
},
{
"category": "product_version",
"name": "3.0.2",
"product": {
"name": "Firmware 3.0.2",
"product_id": "CSAFPID-21009",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex100_firmware:3.0.2:*:*:*:*:*:*:*"
}
}
}
],
"category": "product_family",
"name": "Firmware"
}
],
"category": "vendor",
"name": "Helmholz"
}
],
"product_groups": [
{
"group_id": "CSAFGID-0001",
"product_ids": [
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010"
],
"summary": "Affected products."
},
{
"group_id": "CSAFGID-0002",
"product_ids": [
"CSAFPID-31011",
"CSAFPID-31012"
],
"summary": "Fixed products."
}
],
"relationships": [
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c=8.4.4 installed on Helmholz REX200/250",
"product_id": "CSAFPID-31007"
},
"product_reference": "CSAFPID-21004",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware \u003c=3.0.2 installed on Helmholz REX100",
"product_id": "CSAFPID-31008"
},
"product_reference": "CSAFPID-21007",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 8.4.4 installed on Helmholz REX200/250",
"product_id": "CSAFPID-31009",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex200_250:8.4.4:*:*:*:*:*:*:*"
}
},
"product_reference": "CSAFPID-21006",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.0.2 installed on MB connect line mbNET.mini",
"product_id": "CSAFPID-31010",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex100:3.0.2:*:*:*:*:*:*:*"
}
},
"product_reference": "CSAFPID-21009",
"relates_to_product_reference": "CSAFPID-11004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 8.4.5 installed on MB connect line mbNET/mbNET.rokey",
"product_id": "CSAFPID-31011",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex200_250:8.4.5:*:*:*:*:*:*:*"
}
},
"product_reference": "CSAFPID-21005",
"relates_to_product_reference": "CSAFPID-11003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "Firmware 3.0.3 installed on MB connect line mbNET.mini",
"product_id": "CSAFPID-31012",
"product_identification_helper": {
"cpe": "cpe:2.3:o:helmholz:rex100:3.0.3:*:*:*:*:*:*:*"
}
},
"product_reference": "CSAFPID-21008",
"relates_to_product_reference": "CSAFPID-11004"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-40851",
"cwe": {
"id": "CWE-1287",
"name": "Improper Validation of Specified Type of Input"
},
"notes": [
{
"audience": "all",
"category": "description",
"text": "A low privileged local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.",
"title": "CVE Description"
}
],
"product_status": {
"fixed": [
"CSAFPID-31011",
"CSAFPID-31012"
],
"known_affected": [
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010"
]
},
"references": [
{
"category": "external",
"summary": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - 8.5 / High",
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "Update:\n\n- REX200/250: 8.4.5\n- REX100: 3.0.3",
"group_ids": [
"CSAFGID-0001"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalScore": 8.4,
"environmentalSeverity": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 8.4,
"temporalSeverity": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010"
]
}
],
"title": "Command injection via USB"
},
{
"cve": "CVE-2026-40852",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"notes": [
{
"audience": "all",
"category": "description",
"text": "A high privileged attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability.",
"title": "CVE Description"
}
],
"product_status": {
"fixed": [
"CSAFPID-31011",
"CSAFPID-31012"
],
"known_affected": [
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010"
]
},
"references": [
{
"category": "external",
"summary": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - 8.6 / High",
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "Update:\n\n- REX200/250: 8.4.5\n- REX100: 3.0.3",
"group_ids": [
"CSAFGID-0001"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalScore": 7.2,
"environmentalSeverity": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"temporalScore": 7.2,
"temporalSeverity": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-31007",
"CSAFPID-31008",
"CSAFPID-31009",
"CSAFPID-31010"
]
}
],
"title": "Command injection via malicious configuration"
}
]
}
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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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