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CVE-2026-19489

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CVSS

10.0

Reports

8

First seen

Aug 19, 2026

Last seen

Sep 27, 2026

Affected product

Citrix NetScaler

Associated actors

Clop ×1 StopAndProtect campaign operators ×1

Recent reports

Citrix admins warned to shut down NetScalers over 2 exploited zero-days

Bleeping ComputerSep 27, 2026 Critical

Citrix NetScaler ADC and Gateway Authentication Bypass and Buffer Overflow Vulnerabilities

Canadian Centre AlertsSep 4, 2026 High

CISA orders federal agencies to patch Citrix NetScaler RCE flaw by Saturday

Bleeping ComputerAug 27, 2026 High

Check Point Threat Intelligence Report – 24 August 2026

Check Point ResearchAug 24, 2026 Critical

Critical NetScaler Authentication Bypass Vulnerability (CVE-2026-19490)

The Hacker NewsAug 20, 2026 High

Citrix urges admins to patch new NetScaler flaws as soon as possible

Bleeping ComputerAug 20, 2026 High

Multiple Vulnerabilities in Citrix NetScaler ADC and Gateway Products

GovCERT.HKAug 20, 2026 Critical

Critical Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway

CERT-EU AdvisoriesAug 19, 2026

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