Cisco SD-WAN
Cybersecurity & Risk
Cisco SD-WAN Zero-Day: How UAT-8616 Hid for Three Years
March 25, 2026
CVE-2026-20127, a CVSS 10.0 flaw in Cisco Catalyst SD-WAN, let UAT-8616 lurk undetected since 2023. Five Eyes and CISA issued emergency response guidance.
