The Canadian Centre for Cyber Security issued advisories warning of active exploitation of two critical vulnerabilities. CVE-2026-20182 affects Cisco Catalyst SD-WAN devices, allowing unauthenticated remote attackers to bypass authentication and gain root privileges, while CVE-2026-42897 is a spoofing vulnerability affecting on-premises Microsoft Exchange Servers.
CVE-2026-20182
3 posts
Cyber Centre Daily Advisory Digest — 2026-05-15 (2 advisories) CISA Adds One Known Exploited Vulnerability to Catalog - CVE-2026-20182 CISA has added CVE-2026-20182, an authentication bypass vulnerability affecting Cisco Catalyst SD-WAN Controllers, to its Known Exploited Vulnerabilities (KEV) catalog due to evidence of active exploitation. Federal agencies and private organizations are strongly urged to apply mitigations outlined in Emergency Directive 26-03 or discontinue use of the product if mitigations are unavailable.
Ongoing exploitation of Cisco Catalyst SD-WAN vulnerabilities Cisco Talos is tracking active exploitation of multiple vulnerabilities in Cisco Catalyst SD-WAN Controller and Manager. Threat actor UAT-8616 is exploiting CVE-2026-20182 for authentication bypass, while other clusters are chaining CVE-2026-20133, CVE-2026-20128, and CVE-2026-20122 to deploy JSP webshells and post-exploitation frameworks like Sliver and AdaptixC2.
