CVE-2026-3356 (GCVE-0-2026-3356)
Vulnerability from cvelistv5 – Published: 2026-03-31 18:40 – Updated: 2026-04-01 13:43
VLAI
EPSS
VEX
Title
Missing Authentication for Critical Function vulnerability in Anritsu Remote Spectrum Monitor
Summary
The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-01 13:43 UTC
CWE
- CWE-306 - Missing authentication for critical function
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
4 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Anritsu | Remote Spectrum Monitor MS27100A |
Affected:
All versions
(custom)
|
guessed | |
| Anritsu | Remote Spectrum Monitor MS27101A |
Affected:
All versions
(custom)
|
guessed | |
| Anritsu | Remote Spectrum Monitor MS27102A |
Affected:
All versions
(custom)
|
guessed | |
| Anritsu | Remote Spectrum Monitor MS27103A |
Affected:
All versions
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-3356",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-01T13:43:38.631220Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-01T13:43:44.724Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27100A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27101A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27102A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27103A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Souvik Kandar"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error.\u0026nbsp;\u003cbr\u003e"
}
],
"value": "The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-306",
"description": "CWE-306 Missing authentication for critical function",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-31T18:40:17.359Z",
"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
"shortName": "icscert"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-01"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Missing Authentication for Critical Function vulnerability in Anritsu Remote Spectrum Monitor",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Anritsu has no plans to fix this issue. Anritsu recommends that users deploy Remote Spectrum Monitor within secure network environments to mitigate potential risks.\n\u003cbr\u003e\n\u003cbr\u003eUsers can contact Anritsu Technical Support (1-800-267-4878) for more information."
}
],
"value": "Anritsu has no plans to fix this issue. Anritsu recommends that users deploy Remote Spectrum Monitor within secure network environments to mitigate potential risks.\n\n\n\nUsers can contact Anritsu Technical Support (1-800-267-4878) for more information."
}
],
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
"assignerShortName": "icscert",
"cveId": "CVE-2026-3356",
"datePublished": "2026-03-31T18:40:17.359Z",
"dateReserved": "2026-02-27T18:08:31.007Z",
"dateUpdated": "2026-04-01T13:43:44.724Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-3356",
"date": "2026-09-26",
"epss": "0.00577",
"percentile": "0.45299"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27100A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27101A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27102A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27103A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
}
],
"source": "ics-cert@hq.dhs.gov"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error."
},
{
"lang": "es",
"value": "El monitor de espectro remoto MS27102A es vulnerable a una omisi\u00f3n de autenticaci\u00f3n que permite a usuarios no autorizados acceder y manipular su interfaz de gesti\u00f3n. Debido a que el dispositivo no proporciona ning\u00fan mecanismo para habilitar o configurar la autenticaci\u00f3n, el problema es inherente a su dise\u00f1o en lugar de un error de implementaci\u00f3n."
}
],
"id": "CVE-2026-3356",
"lastModified": "2026-07-24T20:10:00.147",
"metrics": {
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "ics-cert@hq.dhs.gov",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3356",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-01T13:43:38.631220Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-31T19:16:28.943",
"references": [
{
"source": "ics-cert@hq.dhs.gov",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-01"
}
],
"sourceIdentifier": "ics-cert@hq.dhs.gov",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-306"
}
],
"source": "ics-cert@hq.dhs.gov",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-04-01T23:00:24+00:00",
"cve": "CVE-2026-3356",
"id": "CVE-2026-3356",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Missing Authentication for Critical Function vulnerability in Anritsu Remote Spectrum Monitor",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3356.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-3356",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-01T13:43:38.631220Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-01T13:43:41.554Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27100A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27101A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27102A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "Remote Spectrum Monitor MS27103A",
"vendor": "Anritsu",
"versions": [
{
"status": "affected",
"version": "All versions",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Souvik Kandar"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error.\u0026nbsp;\u003cbr\u003e"
}
],
"value": "The MS27102A Remote Spectrum Monitor is vulnerable to an authentication bypass that allows unauthorized users to access and manipulate its management interface. Because the device provides no mechanism to enable or configure authentication, the issue is inherent to its design rather than a deployment error."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-306",
"description": "CWE-306 Missing authentication for critical function",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-31T18:40:17.359Z",
"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
"shortName": "icscert"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-090-01"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Missing Authentication for Critical Function vulnerability in Anritsu Remote Spectrum Monitor",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Anritsu has no plans to fix this issue. Anritsu recommends that users deploy Remote Spectrum Monitor within secure network environments to mitigate potential risks.\n\u003cbr\u003e\n\u003cbr\u003eUsers can contact Anritsu Technical Support (1-800-267-4878) for more information."
}
],
"value": "Anritsu has no plans to fix this issue. Anritsu recommends that users deploy Remote Spectrum Monitor within secure network environments to mitigate potential risks.\n\n\n\nUsers can contact Anritsu Technical Support (1-800-267-4878) for more information."
}
],
"x_generator": {
"engine": "Vulnogram 1.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
"assignerShortName": "icscert",
"cveId": "CVE-2026-3356",
"datePublished": "2026-03-31T18:40:17.359Z",
"dateReserved": "2026-02-27T18:08:31.007Z",
"dateUpdated": "2026-04-01T13:43:44.724Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…