Actively Exploited Citrix Vulnerabilities in 2026

Short answer: this page lists every Citrix vulnerability that CISA added to its Known Exploited Vulnerabilities (KEV) catalog in 2026, meaning there is evidence of exploitation in the wild, with the fix and a link to our Daily Brief coverage where we wrote about it. If you run any product in the table, treat its row as a patch-now item.

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Citrix vulnerabilities exploited in 2026

As of 2026-10-16 (CISA KEV catalog version 2026.10.16), CISA lists 6 Citrix vulnerabilities added to the Known Exploited Vulnerabilities catalog in 2026. CyberExperts has covered 5 of them in the Daily Brief. Newest additions are first.

CVEProductAdded to KEVFixOur coverage
CVE-2026-88779NetScaler
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
2026-10-04Apply the vendor's updates or mitigations. Vendor advisoryMonday’s brief: NetScaler again, then Zammad, Dell storage, GitLab’s AI gateway
NetScaler SAML Flaw CVE-2026-88779: Fixed Builds and What to Hunt
Patched NetScaler last week? Check again, because Citrix has a new SAML fix
CVE-2026-88772NetScaler
Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
2026-09-27Apply the vendor's updates or mitigations. Vendor advisoryMonday’s brief: NetScaler zero-days, then SharePoint’s deadline, Zimbra OnlyOffice, and a WSO2 JWT bypass
NetScaler zero-days were exploited before the patch — upgrade every ADC and Gateway today
Federal NetScaler clock ends today. Mandiant just published the web shells to hunt
CVE-2026-88771NetScaler
Citrix NetScaler Improper Input Validation Vulnerability
2026-09-27Apply the vendor's updates or mitigations. Vendor advisoryMonday’s brief: NetScaler zero-days, then SharePoint’s deadline, Zimbra OnlyOffice, and a WSO2 JWT bypass
NetScaler zero-days were exploited before the patch — upgrade every ADC and Gateway today
Federal NetScaler clock ends today. Mandiant just published the web shells to hunt
CVE-2026-19490NetScaler
Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
2026-09-09Apply the vendor's updates or mitigations. Vendor advisoryThe 5-Minute Cyber Brief: September 9, 2026
Citrix NetScaler CVE-2026-19490: The Auth Bypass That Went From PoC to Probes in a Day
Citrix NetScaler CVE-2026-19490: Gateway Auth Bypass Exploited in the Wild
CVE-2026-8452NetScaler ADC and NetScaler Gateway
Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
2026-08-26Apply the vendor's updates or mitigations. Vendor advisoryCISA orders feds to patch Citrix NetScaler RCE flaw by Saturday
The 5-Minute Cyber Brief: August 28, 2026
CVE-2026-3055NetScaler
Citrix NetScaler Out-of-Bounds Read Vulnerability
2026-03-30Apply the vendor's updates or mitigations. Vendor advisoryNot covered yet

How this page is built

The table is compiled from CISA’s Known Exploited Vulnerabilities catalog and our own Daily Brief coverage, and we refresh it as CISA adds entries. A missing row means CISA has not added that flaw to KEV this year, not that it is safe to ignore. Always confirm fixed versions in the vendor advisory.