Critical Zero-Day Vulnerabilities Impact Cisco and SonicWall Enterprise Networking Devices

Cisco and SonicWall have issued emergency patches for critical authentication-bypass and server-side request forgery flaws in their enterprise networking products. These vulnerabilities, including CVE-2026-76504 for Cisco Catalyst SD-WAN Manager and CVE-2026-102255 for SonicWall SMA 1000 appliances, are actively being exploited in the wild, prompting CISA to add them to its Known Exploited Vulnerabilities catalog.