CISA adds Cisco Catalyst SD-WAN Manager CVE-2026-76504 hex encoding flaw to KEV catalog over active exploitation
CISA added one vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog on 2026-09-30, citing evidence of active exploitation: CVE-2026-76504, a hex encoding vulnerability in Cisco Catalyst SD-WAN Manager. CISA describes this vulnerability type as a frequent attack vector for malicious cyber actors and a significant risk to the …