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TI-2026-67510 Aliases CVE-2026-88779GHSA-56r3-m27m-8p62

Memory overflow vulnerability leading to Denial of Service

Priority CRITICAL 95Exploited in the wildCWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.

Why it matters now

Exploitation Active In CISA KEV since 2026-10-04CISA due date 2026-10-07
EPSS 0.11388 96th percentileScored 2026-11-07
Fix Fixed ADC (NetScaler): 14.1-73.41, 13.1-64.28, 14.1-73.41 FIPS +1Gateway (NetScaler): 14.1-73.41, 13.1-64.28

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CitrixADCbefore 14.1-73.41; before 13.1-64.28; before 14.1-73.41 FIPS; before 13.1-37.28214.1-73.41, 13.1-64.28, 14.1-73.41 FIPS, 13.1-37.282Patch availableCNA
CitrixGatewaybefore 14.1-73.41; before 13.1-64.2814.1-73.41, 13.1-64.28Patch availableCNA
  • ADC VendorCitrix Affected before 14.1-73.41; before 13.1-64.28; before 14.1-73.41 FIPS; before 13.1-37.282 Fixed in 14.1-73.41, 13.1-64.28, 14.1-73.41 FIPS, 13.1-37.282 Patch available CNA
  • Gateway VendorCitrix Affected before 14.1-73.41; before 13.1-64.28 Fixed in 14.1-73.41, 13.1-64.28 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*13.1 to before 13.1-37.282VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*13.1 to before 13.1-37.282VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*13.1 to before 13.1-64.28; 14.1 to before 14.1-73.41VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*14.1-66.68 – 14.1-73.41VulnerableCitrix
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*13.1 to before 13.1-64.28; 14.1 to before 14.1-73.41VulnerableCitrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions 13.1 to before 13.1-37.282 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* Versions 13.1 to before 13.1-37.282 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* Versions 13.1 to before 13.1-64.28; 14.1 to before 14.1-73.41 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions 14.1-66.68 – 14.1-73.41 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* Versions 13.1 to before 13.1-64.28; 14.1 to before 14.1-73.41 Vulnerable ·Citrix

Remediation

  • Fix · CNA ADC (NetScaler) Fixed in 14.1-73.41, 13.1-64.28, 14.1-73.41 FIPS, 13.1-37.282
  • Fix · CNA Gateway (NetScaler) Fixed in 14.1-73.41, 13.1-64.28

Timeline

  1. 2026-10-04 Added to CISA KEV
  2. 2026-10-04 Threatist record created from CVE-2026-88779
  3. 2026-10-04 Alias added: GHSA-56r3-m27m-8p62
  4. 2026-10-04 Weakness changed · CISA ADP
  5. 2026-10-04 CISA SSVC decision points changed
  6. 2026-10-04 CISA SSVC decision points changed
  7. 2026-10-04 Priority changed: MEDIUM → CRITICAL
  8. 2026-10-05 CISA SSVC decision points changed
  9. 2026-10-05 CVSS score added · NVD
  10. 2026-10-08 CISA KEV entry updated
  11. 2026-10-25 EPSS moved to the 95th–99th percentile

References

Advisory 2

  • TI-2026-60195 Memory overflow vulnerability leading to Remote Code Execution or Denial of Service KEVCVSS 4.0CRITICAL 9.5
  • TI-2026-60194 Improper input validation in Citrix ADC KEVCVSS 4.0CRITICAL 9.5
  • TI-2023-04571 Unauthenticated sensitive information disclosure in Citrix NetScaler ADC KEVCVSS 3.1CRITICAL 9.4
  • TI-2023-03284 Unauthenticated remote code execution in Citrix NetScaler ADC KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-15872 NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-19490 KEVCVSS 4.0CRITICAL 9.3
  • TI-2026-02639 Insufficient input validation leading to memory overread KEVCVSS 4.0CRITICAL 9.3
See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences