FKIE_CVE-2026-20129

Vulnerability from fkie_nvd - Published: 2026-02-25 17:25 - Updated: 2026-03-04 21:16
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A vulnerability in the API user authentication of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain access to an affected system as a user who has the netadmin role. The vulnerability is due to improper authentication for requests that are sent to the API. An attacker could exploit this vulnerability by sending a crafted request to the API of an affected system. A successful exploit could allow the attacker to execute commands with the privileges of the netadmin role. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability. 
References
psirt@cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4vVendor Advisory
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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  "cveTags": [],
  "descriptions": [
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      "value": "A vulnerability in the API user authentication of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain access to an affected system as a user who has the\u0026nbsp;netadmin role.\r\n\r\nThe vulnerability is due to improper authentication for requests that are sent to the API. An attacker could exploit this vulnerability by sending a crafted request to the API of an affected system. A successful exploit could allow the attacker to execute commands with the privileges of the netadmin role.\r\nNote: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.\u0026nbsp;"
    },
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      "value": "Una vulnerabilidad en la autenticaci\u00f3n de usuarios de la API de Cisco Catalyst SD-WAN Manager podr\u00eda permitir a un atacante remoto no autenticado obtener acceso a un sistema afectado como un usuario con el rol de netadmin.\n\nLa vulnerabilidad se debe a una autenticaci\u00f3n incorrecta para las solicitudes que se env\u00edan a la API. Un atacante podr\u00eda explotar esta vulnerabilidad enviando una solicitud manipulada a la API de un sistema afectado. Un exploit exitoso podr\u00eda permitir al atacante ejecutar comandos con los privilegios del rol de netadmin.\nNota: Las versiones 20.18 y posteriores de Cisco Catalyst SD-WAN Manager no se ven afectadas por esta vulnerabilidad."
    }
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  "id": "CVE-2026-20129",
  "lastModified": "2026-03-04T21:16:28.077",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
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  "published": "2026-02-25T17:25:30.343",
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  "vulnStatus": "Analyzed",
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          "value": "CWE-287"
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      "source": "psirt@cisco.com",
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}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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