Occurred Aug 26, 2026, 12:00:00 AM UTC

First published Oct 27, 2026, 8:12:15 PM UTC · Last updated Oct 27, 2026, 8:12:15 PM UTC

CVE-2026-8452: Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

Reported by CISA Known Exploited Vulnerabilities

A memory-buffer restriction vulnerability in Citrix NetScaler ADC and NetScaler Gateway could lead to denial of service. The source directs stakeholders to apply vendor mitigations or discontinue use if mitigations are unavailable.

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Why it matters

The source identifies a potential denial-of-service vulnerability and calls for mitigation.

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 6/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 2/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 2/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 5/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

CISA Known Exploited Vulnerabilities CVE-2026-8452: Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

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