FKIE_CVE-2026-20122

Vulnerability from fkie_nvd - Published: 2026-02-25 17:25 - Updated: 2026-04-21 11:59
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Summary
A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
References
psirt@cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4vVendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20122US Government Resource
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 20.12.6
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  "configurations": [
    {
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  "cveTags": [],
  "descriptions": [
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      "value": "A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system.\r\n\r\nThis vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system\u0026nbsp;and gain vmanage user privileges."
    },
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      "value": "Una vulnerabilidad en la API de Cisco Catalyst SD-WAN Manager podr\u00eda permitir a un atacante remoto y autenticado sobrescribir archivos arbitrarios en el sistema de archivos local. Para explotar esta vulnerabilidad, el atacante debe tener credenciales v\u00e1lidas de solo lectura con acceso a la API en el sistema afectado.\n\nEsta vulnerabilidad se debe a un manejo inadecuado de archivos en la interfaz de la API de un sistema afectado. Un atacante podr\u00eda explotar esta vulnerabilidad al cargar un archivo malicioso en el sistema de archivos local. Un exploit exitoso podr\u00eda permitir al atacante sobrescribir archivos arbitrarios en el sistema afectado y obtener privilegios de usuario de vmanage."
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  "id": "CVE-2026-20122",
  "lastModified": "2026-04-21T11:59:56.777",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
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          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
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        "type": "Secondary"
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        "exploitabilityScore": 2.8,
        "impactScore": 2.5,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2026-02-25T17:25:28.170",
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      "tags": [
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  "vulnStatus": "Analyzed",
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}


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  • 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.
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  • 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.



Detection rules are retrieved from Rulezet.