Buffer overflow in Citrix Netscaler Application Delivery Controller

CVE-2026-88775

Memory overflow vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.

This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS 0.007, 54.3th percentile (scored ); unchanged over 30 days. About EPSS.

Affected products

Weakness classification (CWE)

Public exploits and proof-of-concept code

5 public repositories with exploit or proof-of-concept code for this CVE:

  • CompleTech-Security/netscaler-cve-2026-88775-check (last pushed 2026-10-26): Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88775. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads.
  • CompleteTech-Security/netscaler-cve-2026-88775-check (last pushed 2026-10-26): Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88775. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads.
  • CompleTetech-Security/netscaler-cve-2026-88775-check (last pushed 2026-10-26): Offline NetScaler ADC / Gateway evidence checker for CVE-2026-88775. Reported firmware and configuration evidence. Standalone Python; JSON/CSV/HTML reports; no exploit payloads.
  • completetech-security/netscaler-cve-2026-88775-check (last pushed 2026-10-24): Standalone defensive checker project for CVE-2026-88775: Citrix NetScaler ADC / Gateway: Gateway / AAA memory corruption. One exploit per repository; implementation pending.
  • CompleteTech-LLC/netscaler-cve-2026-88775-check (last pushed 2026-10-24): Standalone defensive checker project for CVE-2026-88775: Citrix NetScaler ADC / Gateway: Gateway / AAA memory corruption. One exploit per repository; implementation pending.

References

This CVE has public exploit evidence. See the latest CVEs with public exploits.