CVE-2026-20127 — Actively Exploited: Catalyst SD-WAN Controller and Manager (Cisco)
Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, contain an authentication bypass vulnerability could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exi
| CVE ID | CVE-2026-20127 |
|---|---|
| Vendor | Cisco |
| Product | Catalyst SD-WAN Controller and Manager |
| Vulnerability name | Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability |
| Date added | 2026-02-25 |
| Remediation due | 2026-02-27 |
| Known ransomware use | Unknown |
| Required action | Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicab |
| Description | Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, contain an authentication bypass vulnerability 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 wo |
| Source | CISA Known Exploited Vulnerabilities |
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