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CRITICAL
CVSS 10.0 (v3.1)
cisco
CVE-2026-20127 — Cisco Cisco Catalyst SD-WAN Manager vulnerability(disponible uniquement en EN)
Publié le 25/02/2026
Source : ENISA EUVD
Description(disponible uniquement en EN)
A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.
This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.
This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to an affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.
Impacts(disponible uniquement en EN)
- This vulnerability is actively exploited in the wild. Exploited since: 2026-02-25.
Solutions(disponible uniquement en EN)
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk
https://nvd.nist.gov/vuln/detail/CVE-2026-20127
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127
https://nvd.nist.gov/vuln/detail/CVE-2026-20127
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127
Produits affectés (1)
Cisco Catalyst SD-WAN Manager
Versions affectées :
18.3.7
Vulnérabilités (CVE) (1)
Informations
- Sévérité
- CRITICAL
- CVSS v3.1
-
10.0 / 10 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EUVD
- EUVD-2026-8675
- Indicateurs de risque
- ✓ Exploit actif ? PoC public ✗ CISA KEV ? Patch disponible ? Contournement
- Source
- ENISA EUVD cisco
- Lien externe
- Voir la source ↗
- Publié le
- 25/02/2026
- Mis à jour officiellement
- 25/02/2026
- Ajouté à OpenVOC
- 11/03/2026 00:43
- Dernière modification
- 11/03/2026 00:45
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