CRITICALZero Day
Global

Suspected State Hackers Exploited Citrix NetScaler for Weeks. 50,000 Devices May Still Be Exposed.

·Source: DataBreaches.net

Updated:

Executive Summary

Datawater reports: Two critical NetScaler zero-days, CVE-2026-88771 and CVE-2026-88772, were used against organizations worldwide before a patch existed. CISA’s deadline is today. Patching alone will not tell you whether you were already breached. Threat level: Critical What: Two unauthenticated remote-code-execution flaws in Citrix NetScaler ADC and NetScaler Gateway, both CVSS 9.5. Status: Explo

Analysis

Datawater reports: Two critical NetScaler zero-days, CVE-2026-88771 and CVE-2026-88772, were used against organizations worldwide before a patch existed. CISA’s deadline is today. Patching alone will not tell you whether you were already breached. Threat level: Critical What: Two unauthenticated remote-code-execution flaws in Citrix NetScaler ADC and NetScaler Gateway, both CVSS 9.5. Status: Exploited as zero-days.... Source

Indicators of Compromise (2)

CVE (2)
CVE-2026-88771
NVDMITRE CVE
CVE-2026-88772
NVDMITRE CVE
Source Attribution

Originally published by DataBreaches.net on Oct 1, 2026.

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