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Critical vulnerability

Critical denial of service in NetScaler ADC and Gateway (CVE-2026-120868)

Denial of service in NetScaler ADC and Gateway · Servers and applications

CVE-2026-120868

Memory overflow in Packet Processing can lead to unpredictable or erroneous behavior or Denial of Service in NetScaler ADC and NetScaler Gateway

Severity
Critical 9.3
Published
12 Nov 2026
Fixed in
13.1-64.39, 14.1-73.57, 14.1-73.58 FIPS
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
SoftwareAffected versions
NetScaler ADC and GatewayServers and applications
  • Every version before 13.1-37.293 FIPs and NDcPP
  • Every version before 14.1-73.58 FIPS
  • Every version before 13.1-64.39
  • Every version before 14.1-73.57
NetScaler ADC and GatewayServers and applications
  • Every version before 13.1-64.39
  • Every version before 14.1-73.57
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-120868
Everything about CVE-2026-120868

From NVD, the CVE Program, OSV.dev with the GitHub Advisory Database, WPVulnerability, WordPress's security advisories and CISA's Known Exploited Vulnerabilities catalog, as they stood when this was written. Each vulnerability's own page has its latest rating and fix. This product uses the NVD API but is not endorsed or certified by the NVD.