#cve202620079

CVE-2026-20079 carries a CVSS 3.1 score of 10.0 and affects the Cisco FMC management plane. This review covers the March fix, the September exploitation confirmation, the three Talos clusters and the artifacts worth hunting.

Two Cisco FMC flaws, one scoring 10.0 and one 5.3, were chained by three threat clusters. The console that pushes firewall policy is the asset that matters.