FKIE_CVE-2026-20262
Vulnerability from fkie_nvd - Published: 2026-06-15 18:16 - Updated: 2026-06-17 13:20
Severity
Summary
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system.
This vulnerability exists because the affected software does not properly validate user-supplied input during a file upload process. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected API endpoint of the affected system. A successful exploit could allow the attacker to create or overwrite any file on the underlying operating system. This file could later be used to elevate to root. To exploit this vulnerability, the attacker must have valid credentials with at least a lower-privileged, single-task user account.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| cisco | catalyst_sd-wan_manager | * | |
| cisco | catalyst_sd-wan_manager | * | |
| cisco | catalyst_sd-wan_manager | * | |
| cisco | catalyst_sd-wan_manager | * | |
| cisco | catalyst_sd-wan_manager | * | |
| cisco | catalyst_sd-wan_manager | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "Cisco Catalyst SD-WAN Manager",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
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},
{
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},
{
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},
{
"status": "affected",
"version": "18.4.5"
},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
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},
{
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{
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},
{
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},
{
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"version": "18.3.7"
},
{
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"version": "19.2.0"
},
{
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},
{
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"version": "19.0.0"
},
{
"status": "affected",
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},
{
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{
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{
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{
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{
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{
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{
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{
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},
{
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},
{
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{
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
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{
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"version": "20.11.1_LI_Images"
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{
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{
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{
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{
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"version": "20.3.8"
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{
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{
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{
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{
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{
"status": "affected",
"version": "20.9.5.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.4.1.6"
},
{
"status": "affected",
"version": "20.14.1"
},
{
"status": "affected",
"version": "20.14.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.5.2"
},
{
"status": "affected",
"version": "20.9.5.2.1"
},
{
"status": "affected",
"version": "20.9.5.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.3.1"
},
{
"status": "affected",
"version": "20.12.4"
},
{
"status": "affected",
"version": "20.15.1_LI_Images"
},
{
"status": "affected",
"version": "20.15.1"
},
{
"status": "affected",
"version": "20.9.5.1.4"
},
{
"status": "affected",
"version": "20.9.5.2.7"
},
{
"status": "affected",
"version": "20.9.5.2.13"
},
{
"status": "affected",
"version": "20.9.6"
},
{
"status": "affected",
"version": "20.9.6_LI_Images"
},
{
"status": "affected",
"version": "20.9.5.2.14"
},
{
"status": "affected",
"version": "20.6.8"
},
{
"status": "affected",
"version": "20.12.4.0.03"
},
{
"status": "affected",
"version": "20.16.1"
},
{
"status": "affected",
"version": "20.16.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.4_LI_Images"
},
{
"status": "affected",
"version": "20.9.5.2.16"
},
{
"status": "affected",
"version": "20.12.4.0.4"
},
{
"status": "affected",
"version": "20.12.401"
},
{
"status": "affected",
"version": "20.9.5.3"
},
{
"status": "affected",
"version": "20.9.5.3_LI_Images"
},
{
"status": "affected",
"version": "20.12.4.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.4.1"
},
{
"status": "affected",
"version": "20.9.5.2.21"
},
{
"status": "affected",
"version": "20.9.6.0.3"
},
{
"status": "affected",
"version": "20.12.4.0.6"
},
{
"status": "affected",
"version": "20.15.2_LI_Images"
},
{
"status": "affected",
"version": "20.15.2"
},
{
"status": "affected",
"version": "20.12.4_Monthly_ES5"
},
{
"status": "affected",
"version": "20.12.5"
},
{
"status": "affected",
"version": "20.12.5_LI_Images"
},
{
"status": "affected",
"version": "20.9.7_LI _Images"
},
{
"status": "affected",
"version": "20.9.7"
},
{
"status": "affected",
"version": "20.15.3"
},
{
"status": "affected",
"version": "20.15.3_ LI _Images"
},
{
"status": "affected",
"version": "20.12.501"
},
{
"status": "affected",
"version": "20.12.5.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.1"
},
{
"status": "affected",
"version": "20.12.5.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.2"
},
{
"status": "affected",
"version": "20.15.3.1"
},
{
"status": "affected",
"version": "20.15.4_LI_Images"
},
{
"status": "affected",
"version": "20.15.4"
},
{
"status": "affected",
"version": "20.9.7.1_LI _Images"
},
{
"status": "affected",
"version": "20.9.7.1"
},
{
"status": "affected",
"version": "20.18.1"
},
{
"status": "affected",
"version": "20.18.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.6_LI_Images"
},
{
"status": "affected",
"version": "20.12.6"
},
{
"status": "affected",
"version": "20.12.5.1.01"
},
{
"status": "affected",
"version": "26.0.1"
},
{
"status": "affected",
"version": "20.9.8"
},
{
"status": "affected",
"version": "20.9.8_LI_Images"
},
{
"status": "affected",
"version": "20.18.2"
},
{
"status": "affected",
"version": "20.15.4.1_LI_Images"
},
{
"status": "affected",
"version": "20.15.4.1"
},
{
"status": "affected",
"version": "20.18.2_LI_Images"
},
{
"status": "affected",
"version": "26.1.1"
},
{
"status": "affected",
"version": "26.1.1_LI_Images"
},
{
"status": "affected",
"version": "20.18.2.1_LI_Images"
},
{
"status": "affected",
"version": "20.18.2.1"
},
{
"status": "affected",
"version": "20.15.4.2_LI_Images"
},
{
"status": "affected",
"version": "20.15.4.2"
},
{
"status": "affected",
"version": "20.12.6.1"
},
{
"status": "affected",
"version": "20.12.6.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.3"
},
{
"status": "affected",
"version": "20.12.5.3_LI_Images"
},
{
"status": "affected",
"version": "20.9.8.2_LI_Images"
},
{
"status": "affected",
"version": "20.9.8.2"
},
{
"status": "affected",
"version": "20.18.3"
},
{
"status": "affected",
"version": "20.18.3_LI_Images"
},
{
"status": "affected",
"version": "20.15.5"
},
{
"status": "affected",
"version": "20.15.5_LI_Images"
},
{
"status": "affected",
"version": "20.12.7"
},
{
"status": "affected",
"version": "20.12.7_LI_Images"
},
{
"status": "affected",
"version": "20.9.9"
},
{
"status": "affected",
"version": "20.9.9_LI_Images"
},
{
"status": "affected",
"version": "20.18.2.2"
},
{
"status": "affected",
"version": "20.18.2.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.4"
},
{
"status": "affected",
"version": "20.12.5.4_LI_ Images"
},
{
"status": "affected",
"version": "20.12.7.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.6.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.7.1"
},
{
"status": "affected",
"version": "20.15.5.1"
},
{
"status": "affected",
"version": "20.15.4.3"
},
{
"status": "affected",
"version": "20.15.4.3_LI_Images"
},
{
"status": "affected",
"version": "20.15.5.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.6.2"
},
{
"status": "affected",
"version": "20.15.5.2"
},
{
"status": "affected",
"version": "20.15.5.2_LI_Images"
},
{
"status": "affected",
"version": "26.1.1.1_LI_Images"
},
{
"status": "affected",
"version": "20.15.4.4"
},
{
"status": "affected",
"version": "20.15.4.4_LI_Images"
},
{
"status": "affected",
"version": "26.1.1.1"
},
{
"status": "affected",
"version": "20.9.9.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.9.1"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"cisaActionDue": "2026-06-29",
"cisaExploitAdd": "2026-06-15",
"cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
"cisaVulnerabilityName": "Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FF1A1919-D28E-4742-BB03-D3F215A0274D",
"versionEndExcluding": "20.9.9.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "07958878-5A93-4EE9-91C8-C8271A40CF09",
"versionEndExcluding": "20.12.7.2",
"versionStartIncluding": "20.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8834BCEE-821C-4ADD-903E-F285D862F8A0",
"versionEndExcluding": "20.15.4.5",
"versionStartIncluding": "20.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "931728D6-C3F9-4305-84A5-F3910B4D0A24",
"versionEndExcluding": "20.15.5.3",
"versionStartIncluding": "20.15.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "65C69D4B-69CF-4001-82EB-10B12BF4A5EB",
"versionEndExcluding": "20.18.3.1",
"versionStartIncluding": "20.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5BB1F997-DD81-45C8-B9FE-208A06259D72",
"versionEndExcluding": "26.1.1.2",
"versionStartIncluding": "26.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system.\r\n\r\nThis vulnerability exists because the affected software does not properly validate user-supplied input during a file upload process. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected API endpoint of the affected system. A successful exploit could allow the attacker to create or overwrite any file on the underlying operating system. This file could later be used to elevate to root. To exploit this vulnerability, the attacker must have valid credentials with at least a lower-privileged, single-task user account."
}
],
"id": "CVE-2026-20262",
"lastModified": "2026-06-17T13:20:04.900",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20262",
"options": [
{
"exploitation": "active"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-15T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-15T18:16:34.820",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
"Vendor Advisory"
],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-arbfw-c2rZvQ"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20262"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
],
"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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