Cisco SD-WAN Zero-Day CVE-2026-20127 Exploited Since 2023 for Admin Access
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2022-20775 | Path Traversal Privilege Escalation in Cisco SD-WAN Software CLI | 7.8 | 12% | KEVPoC | KEV |
| CVE-2026-20127 | Authentication Bypass in Cisco Catalyst SD-WAN Controller, Manager, Validator | 10.0 | 88% | KEV | KEV |
From the original article
4 min read at thehackernews.com
Ravie Lakshmanan Feb 26, 2026 Vulnerability / Network Security A newly disclosed maximum-severity security flaw in Cisco Catalyst SD-WAN Controller (formerly vSmart) and Catalyst SD-WAN Manager (formerly vManage) has come under active exploitation in the wild as part of malicious activity that dates back to 2023. The vulnerability, tracked as CVE-2026-20127 (CVSS score: 10.
By @TheHackersNews · thehackernews.com
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