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Security

Citrix NetScaler flaw exploited in targeted attacks can disrupt deployments

Citrix NetScaler ADC and Gateway are affected by a memory-overflow vulnerability, CVE-2026-88779, that can lead to denial of service. One report says the flaw has been exploited in targeted zero-day attacks and that Citrix released security updates.

2 sources Published Updated

Image: The Register

Why it matters

The reported flaw can cause denial of service, and one source says it has been exploited in targeted attacks against NetScaler products.

What we know

Confirmed by several sources

  • CVE-2026-88779 is described as a memory-overflow vulnerability in Citrix NetScaler products that can lead to denial of service. — The Register, The Hacker News

Reported by one source

Coverage 2 publishers

  1. The Register

    Citrix NetScaler security snafus get even worse amid more 0-day reports

  2. The Hacker News

    New NetScaler Zero-Day Exploited in Targeted Attacks Can Knock SAML Deployments Offline

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