FKIE_CVE-2026-20262
Vulnerability from fkie_nvd - Published: 2026-06-15 18:16 - Updated: 2026-07-24 19:10
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",
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{
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},
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},
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},
{
"status": "affected",
"version": "18.4.5"
},
{
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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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{
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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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"version": "20.9.5.1_LI_Images"
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{
"status": "affected",
"version": "20.9.4.1.6"
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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},
{
"status": "affected",
"version": "20.9.5.2.1"
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{
"status": "affected",
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{
"status": "affected",
"version": "20.12.3.1"
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{
"status": "affected",
"version": "20.12.4"
},
{
"status": "affected",
"version": "20.15.1_LI_Images"
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{
"status": "affected",
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{
"status": "affected",
"version": "20.9.5.1.4"
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{
"status": "affected",
"version": "20.9.5.2.7"
},
{
"status": "affected",
"version": "20.9.5.2.13"
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{
"status": "affected",
"version": "20.9.6"
},
{
"status": "affected",
"version": "20.9.6_LI_Images"
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{
"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"
},
{
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"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"
},
{
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},
{
"status": "affected",
"version": "20.15.3_ LI _Images"
},
{
"status": "affected",
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},
{
"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",
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},
{
"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",
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},
{
"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
},
{
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"matchCriteriaId": "07958878-5A93-4EE9-91C8-C8271A40CF09",
"versionEndExcluding": "20.12.7.2",
"versionStartIncluding": "20.10",
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},
{
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"matchCriteriaId": "8834BCEE-821C-4ADD-903E-F285D862F8A0",
"versionEndExcluding": "20.15.4.5",
"versionStartIncluding": "20.13",
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},
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"matchCriteriaId": "931728D6-C3F9-4305-84A5-F3910B4D0A24",
"versionEndExcluding": "20.15.5.3",
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},
{
"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
"matchCriteriaId": "65C69D4B-69CF-4001-82EB-10B12BF4A5EB",
"versionEndExcluding": "20.18.3.1",
"versionStartIncluding": "20.16",
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},
{
"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."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la interfaz de usuario web de Cisco Catalyst SD-WAN Manager, anteriormente SD-WAN vManage, podr\u00eda permitir a un atacante remoto autenticado crear o sobrescribir cualquier archivo en el sistema de archivos de un sistema afectado.\n\nEsta vulnerabilidad existe porque el software afectado no valida correctamente la entrada proporcionada por el usuario durante un proceso de carga de archivos. Un atacante podr\u00eda explotar esta vulnerabilidad enviando una solicitud HTTP manipulada a un endpoint de API afectado del sistema afectado. Un exploit exitoso podr\u00eda permitir al atacante crear o sobrescribir cualquier archivo en el sistema operativo subyacente. Este archivo podr\u00eda usarse posteriormente para escalar a root. Para explotar esta vulnerabilidad, el atacante debe tener credenciales v\u00e1lidas con al menos una cuenta de usuario de tarea \u00fanica y con privilegios bajos."
}
],
"id": "CVE-2026-20262",
"lastModified": "2026-07-24T19:10:00.160",
"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"
}
]
}
Loading…
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.