CRITICAL CISA KEV

CVE-2026-20182

CVSS v3

CRITICAL

EPSS Score

1.6 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks.  A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manage

CISA Known Exploited Vulnerability

Date Added: 2026-05-14
Patch Due Date: 2026-05-17
Ransomware Use: Unknown

Technical details

Published: 2026-05-14

Frequently asked questions

What is CVE-2026-20182?

Is CVE-2026-20182 actively exploited?

Yes. CVE-2026-20182 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-05-17.

What is the CVSS score for CVE-2026-20182?

CVE-2026-20182 has a CVSS v3 base score of 10 (CRITICAL severity).

Is CVE-2026-20182 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IP Search CVEs SIEM & TIP integrations

No credit card required · 500 free checks/month · Free API key

Other 2026 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database