Vulnerabilities & Exploits

Citrix flaws threaten NetScaler services and access

Citrix patched 14 vulnerabilities across Secure Access Client for Windows, NetScaler ADC, NetScaler Gateway and NetScaler Console, including remotely exploitable denial-of-service flaws and a Console authentication bypass.

Several NetScaler flaws involve memory overflows or corruption in packet processing and configured features, which can make an appliance behave unpredictably or stop responding. One packet-processing flaw affects all ADC and Gateway deployments; other remote flaws depend on services such as DNS, VPN or authentication being configured. The Console flaw can expose restricted resources by bypassing authentication.

For organizations relying on NetScaler for load balancing, DNS, VPN or authentication, a remotely triggered outage can interrupt those services without an attacker taking over the appliance. Exposure varies with the products and features in use, so the advisory does not describe a uniform risk across every Citrix deployment.

4 sources · 12h ago

CVEs in this update

14 CVEs

Across apitable, ADC, Gateway, and related packages.

0 critical · 0 high · 1 medium · 0 low

0 in CISA KEV · 0 with EPSS above 1%

Highest severity: CVE-2026-111344 · 4.3 MEDIUM

Highest EPSS: CVE-2026-111344 · 0.34%

Showing the top 10 by KEV, EPSS, and severity.

Timeline

Sources

Vendor digest: Citrix

Part of the PlainSec briefing for 2026-11-13

Every edition of this story: Citrix flaws threaten NetScaler services and access

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