Security update

Citrix NetScaler ADC and Gateway appliances configured as SAML Identity Providers are under active attack exploiting CVE-2026-3055, a critical out-of-bounds. CVEs: CVE-2026-3055.

Part of the PlainSec briefing for 2026-04-02

Sources

• CERT-EU Advisories
• Rapid7
• SecurityWeek
• The Hacker News
• Help Net Security
• Infosecurity Magazine
• BleepingComputer
• UK NCSC