---
id: 7698
title: "CVE-2026-20127 – Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Overview & Takeaways"
cve: CVE-2026-20127
source_domain: netspi.com
source_url: "https://www.netspi.com/blog/executive-blog/critical-vulnerability/cve-2026-20127-cisco-catalyst-sd-wan-controller-and-manager-authentication-bypass-overview-takeaways/"
published_at: "2026-02-27T00:00:00Z"
tags: ["authentication-bypass", "network-security", "cisco", "cisa-kev", "cve-2026-20127", "sd-wan"]
phying_url: "https://phying.com/item/7698"
lang: en
---

# CVE-2026-20127 – Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Overview & Takeaways

## Summary

CVE-2026-20127 is a CVSS 10.0 authentication bypass in Cisco Catalyst SD-WAN Controller and Manager that lets unauthenticated attackers gain admin access; exploitation is confirmed in the wild.

## Intelligence Metadata

- **Sources:** netspi.com
- **CVE:** CVE-2026-20127
- **Published:** 2026-02-27T00:00:00Z
- **Original:** https://www.netspi.com/blog/executive-blog/critical-vulnerability/cve-2026-20127-cisco-catalyst-sd-wan-controller-and-manager-authentication-bypass-overview-takeaways/
- **Phying News:** https://phying.com/item/7698