FKIE_CVE-2026-20167
Vulnerability from fkie_nvd - Published: 2026-05-06 17:16 - Updated: 2026-06-17 10:17
Severity
Summary
A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.
This vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "Cisco IoT Field Network Director (IoT-FND)",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "4.5.1"
},
{
"status": "affected",
"version": "4.4.3"
},
{
"status": "affected",
"version": "4.1.0"
},
{
"status": "affected",
"version": "4.1.3"
},
{
"status": "affected",
"version": "4.6.1"
},
{
"status": "affected",
"version": "4.1.1"
},
{
"status": "affected",
"version": "4.4.0"
},
{
"status": "affected",
"version": "4.2.0"
},
{
"status": "affected",
"version": "4.4.2"
},
{
"status": "affected",
"version": "4.3.0"
},
{
"status": "affected",
"version": "4.6.0"
},
{
"status": "affected",
"version": "4.4.4"
},
{
"status": "affected",
"version": "4.3.2"
},
{
"status": "affected",
"version": "4.1.2"
},
{
"status": "affected",
"version": "4.4.1"
},
{
"status": "affected",
"version": "4.5.0"
},
{
"status": "affected",
"version": "4.3.1"
},
{
"status": "affected",
"version": "4.7.0"
},
{
"status": "affected",
"version": "4.6.2"
},
{
"status": "affected",
"version": "4.7.1"
},
{
"status": "affected",
"version": "4.7.2"
},
{
"status": "affected",
"version": "4.8.0"
},
{
"status": "affected",
"version": "4.8.1"
},
{
"status": "affected",
"version": "4.9.0"
},
{
"status": "affected",
"version": "4.9.1"
},
{
"status": "affected",
"version": "4.10.0"
},
{
"status": "affected",
"version": "4.9.2"
},
{
"status": "affected",
"version": "4.11.0"
},
{
"status": "affected",
"version": "4.12.0"
},
{
"status": "affected",
"version": "4.12.1"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.\r\n\r\nThis vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition."
}
],
"id": "CVE-2026-20167",
"lastModified": "2026-06-17T10:17:15.177",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.1,
"impactScore": 4.0,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20167",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-06T17:25:48.384518Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-06T17:16:20.433",
"references": [
{
"source": "psirt@cisco.com",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iot-fnd-dos-n8N26Q4u"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-284"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
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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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