CVE-2026-20127 — Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability
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
- Severity
- critical
- Product
- Cisco Catalyst SD-WAN Controller and Manager
- Published
- 2026-02-25
- EPSS
- 0.882
- CISA KEV
- Known exploited
- Ransomware
- Known campaign use
References and validation
- https://github.com/search?q=CVE-2026-20127&type=repositories
- https://nvd.nist.gov/vuln/detail/CVE-2026-20127
Entries are refreshed from CISA KEV and FIRST EPSS. Validate applicability before testing.