NetScaler Releases Fixes for Critical CVE-2026-107406 in ADC and Gateway

A critical vulnerability in NetScaler ADC and NetScaler Gateway SAML configurations could allow remote code execution or denial of service. Fixed versions are now available.

A critical vulnerability in NetScaler ADC and NetScaler Gateway SAML configurations could allow remote code execution or denial of service. Fixed versions are now available.

Citrix has also published a temporary mitigation for the actively exploited CVE-2026-88779 vulnerability. Fixed versions for affected NetScaler ADC and Gateway deployments remain available.

Citrix warned of active exploitation of two critical vulnerabilities in customer-managed NetScaler ADC and NetScaler Gateway devices. Both flaws have a CVSS v4 score of 9.5.

Previdian sensors detected requests matching a publicly available proof-of-concept (PoC) for CVE-2026-19490 in NetScaler. Successful compromises have not been confirmed so far.

CISA added CVE-2026-8452 in NetScaler ADC and NetScaler Gateway to its Known Exploited Vulnerabilities catalog. U.S. federal civilian agencies must update the devices by August 29, 2026.