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CVE-2026-120863

Memory overflow in the management plane can lead to unpredictable or erroneous behavior or Denial of Service in Citrix NetScaler ADC and Citrix NetScaler Gateway

  • High 8.7

Description

Memory overflow in the management plane can lead to unpredictable or erroneous behavior or Denial of Service in Citrix NetScaler ADC and Citrix NetScaler Gateway.

Key facts

Published
13 Nov 2026
Last changed
13 Nov 2026
Assigned by
NetScaler
EPSS
0.31% likely to be exploited in the next 30 days, higher than 24.134% of CVEs (scores for 15 Nov 2026)

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.7CVSS 4.0, Highfrom the CNA (NetScaler)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
CitrixNetScaler ADC
  • Default status: unaffected
  • 0 up to but excluding 14.1-73.57 (affected)
  • 0 up to but excluding 13.1-64.39 (affected)
  • 0 up to but excluding 14.1-73.58 FIPS (affected)
  • 0 up to but excluding 13.1-37.293 FIPs and NDcPP (affected)
CitrixNetScaler Gateway
  • Default status: unaffected
  • 0 up to but excluding 14.1-73.57 (affected)
  • 0 up to but excluding 13.1-64.39 (affected)

Timeline

  1. 13 Nov 2026 Published

References