Cisco Catalyst SD

Gbhackers •Divya • May 15, 2026

Cisco has disclosed a critical vulnerability in its Catalyst SD-WAN platform that is already being exploited in the wild, allowing attackers to gain administrative control over enterprise networks without authentication. Critical SD-WAN flaw under attack The vulnerability, tracked as CVE-2026-20182, carries a maximum CVSS score of 10.0 and affects Cisco Catalyst SD-WAN Controller (vSmart) and […]

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Critical Zero-Day Vulnerability CVE-2026-20182 Exploited in Cisco SD-WAN Systems Cisco has disclosed a critical authentication bypass vulnerability, CVE-2026-20182, affecting its Catalyst SD-WAN Controller and Manager. This flaw allows unauthenticated remote attackers to bypass authentication and gain administrative privileges, enabling manipulation of network configurations. The vulnerability has a CVSS score of 10.0 and is actively exploited in the wild by a threat actor known as UAT-8616, who previously exploited a similar vulnerability, CVE-2026-20127. Cisco became aware of the exploitation in May 2026 and has released patches to address the issue. Organizations are urged to apply these updates immediately, as there are no effective workarounds. The vulnerability impacts all deployment types of the Cisco Catalyst SD-WAN, including cloud and on-premises solutions. Security advisories have been issued to monitor for unauthorized access attempts. 131 sources 87

Extracted Entities

Companies (1)

Cisco

CVEs (1)

CVE-2026-20182