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CISA KEV Alert — Active Real-World Exploitation Confirmed
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog and is being actively exploited right now.
Cisco Catalyst SD-WAN Controller Authentication Bypass (CVE-2026-20182) | MSSP Advisory
Critical🔴 KEV ALERTConfirmed
DateMay 14, 2026
CVECVE-2026-20182
CVSS Score10.0
AffectedNot specified
📋Executive Summary
CISA flagged CVE-2026-20182, an authentication bypass vulnerability in Cisco Catalyst SD-WAN controllers that grants remote attackers full administrative access without credentials. This is active exploitation territory with government emergency directives already issued.
⚠️Why It Matters for MSSPs
Your RMM and remote access infrastructure likely touches SD-WAN devices across dozens of client networks, making your MSP a high-value target for lateral movement. Every client with Cisco SD-WAN devices becomes a retention risk if you fail to act on this administrative-level compromise vulnerability.
✅Recommended Action
Audit every client environment for Cisco SD-WAN devices within 24 hours and immediately implement CISA Emergency Directive 26-03 mitigations. Contact clients with exposed devices before they discover the risk themselves, positioning your firm as proactive rather than reactive.
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🏷️Threat Category
Zero-Day
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