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TI-2026-15872 Aliases CVE-2026-19490GHSA-7c6h-rhhv-wm8r

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-19490

Priority CRITICAL 99Exploited in the wildCWE-288Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-288.

Summary

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

Why it matters now

Exploitation Active In CISA KEV since 2026-09-09CISA due date 2026-09-12
EPSS 0.32653 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
CitrixADC14.1 – 73.32; 13.1 – 63.21—No fix listedCNA
CitrixGateway14.1 – 73.32; 13.1 – 63.21—No fix listedCNA
  • ADC VendorCitrix Affected 14.1 – 73.32; 13.1 – 63.21 Fixed in — No fix listed CNA
  • Gateway VendorCitrix Affected 14.1 – 73.32; 13.1 – 63.21 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*13.1 to before 13.1-37.277VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*13.1 to before 13.1-37.277VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*13.1 to before 13.1-63.21; 14.1 to before 14.1-73.32VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*14.1-66.68 – 14.1-73.32VulnerableCitrix
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*13.1 to before 13.1-63.21; 14.1 to before 14.1-73.32VulnerableCitrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions 13.1 to before 13.1-37.277 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* Versions 13.1 to before 13.1-37.277 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* Versions 13.1 to before 13.1-63.21; 14.1 to before 14.1-73.32 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions 14.1-66.68 – 14.1-73.32 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* Versions 13.1 to before 13.1-63.21; 14.1 to before 14.1-73.32 Vulnerable ·Citrix

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-09-09 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2026-19490
  3. 2026-10-03 Alias added: GHSA-7c6h-rhhv-wm8r
  4. 2026-10-07 CISA SSVC decision points changed

References

Advisory 1

  • 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-2026-02639 Insufficient input validation leading to memory overread KEVCVSS 4.0CRITICAL 9.3
  • TI-2025-07100 Memory corruption in Citrix ADC KEVCVSS 4.0CRITICAL 9.2
See all 39 →

Sources

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