Cyber Security News for September 18 2026 - Daily DefSec Brief
1. Cisco ISE zero-day exploited for full control — CVE-2026-76460 — Do: Upgrade ISE, grep access.log on every node — https://cyberscoop.com/cisco-ise-zero-day-cve-2026-76460/ 2. Stolen key rewrote vendor scripts at the edge — Do: Check 14 September traffic, hunt long-lived API keys — https://www.bleepingcomputer.com/news/security/brevo-supply-chain-attack-injected-clickfix-scripts-on-customer-sites/ 3. Acronis backup flaw confirmed exploited — CVE-2026-87886 — Do: Upgrade the Acronis plugin to 1.9.3 HF3 —…
The skinny
The skinny isn't ready yet — notes appear once the transcript is processed.