Hackers have been exploiting CVE-2026-19490, a critical authentication bypass vulnerability in NetScaler, since at least September 3.

Cisco has confirmed that a maximum-severity authentication bypass vulnerability tracked as CVE-2026-20079 in its Secure Firewall Management Center (FMC) software is being actively…

Hackers have been exploiting CVE-2026-19490, a critical authentication bypass vulnerability in NetScaler, since at least September 3.