Widely deployed Citrix NetScaler ADC/Gateway with RCE (CVSS 9.5) and listed in CISA KEV — enterprise‑wide impact requiring immediate remediation.
CVE-2026-88772
RCE/DoS in Citrix NetScaler ADC/Gateway allowing full system compromise.
Is CVE-2026-88772 being exploited?
Not confirmed. CVE-2026-88772 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-88772?
CVE-2026-88772 is rated Critical with a CVSS score of 9.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-88772?
Yes. A fix has been recorded for CVE-2026-88772. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-88772 affect?
CVE-2026-88772 affects Citrix NetScaler ADC (versions before 14.1-73.37, before 13.1-64.23; FIPS/NDcPP variants), Citrix NetScaler Gateway (versions before 14.1-73.37, before 13.1-64.23). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-88772?
Install Citrix fixes (14.1-73.37 / 13.1-64.23 or later) or apply vendor mitigations immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution or denial of service via memory‑buffer overflow on NetScaler, enabling full system compromise, persistent backdoors, or service outages.
Immediate action required