Critical NetScaler Vulnerability Exploited in Attacks

As cited

Copy frozen at 2026-09-10 17:50 UTC (site build).

vulnerabilities

Critical NetScaler Vulnerability Exploited in Attacks

CVE-2026-19490 is a critical authentication bypass flaw in NetScaler that has been actively exploited since September 3, 2026. The vulnerability carries a CVSS score of 9.3 and appears on the known exploited vulnerabilities (KEV) catalog.

Why it matters: NetScaler administrators must patch immediately, as this authentication bypass is under active exploitation and allows attackers to bypass security controls on a widely deployed product.

Source published

2026-09-10 12:20 UTC

First seen by Cybersecurity Tracker

2026-09-10 17:22 UTC