Risk Letters

Exploited vulnerability

CVE-2026-20182

TLP:CLEAR

Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.

Facts

  • Vendor: Cisco
  • Product: Catalyst SD-WAN
  • CVSS: 10
  • EPSS (probability of exploitation within 30 days): 91.8 %
  • On CISA's Known Exploited Vulnerabilities list since: 14 May 2026
  • First known exploitation: 14 May 2026
  • CISA's deadline for US federal agencies: 17 May 2026
  • Weakness: CWE-287
  • First seen by Risk Letters: 14 May 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD