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TI-2026-11401 Aliases CVE-2026-13474GHSA-256v-mmj4-qqjc

Memory leak in Citrix ADC

Priority MEDIUM 44CWE-401Published · 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-401.

Summary

Denial of service via malformed HTTP/2 requests in NetScaler ADC and NetScaler Gateway if HTTP/2 is enabled in HTTP Profile and associated with the virtual server (of type LB, CS, VPN) or the service configured on NetScaler

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00556 46th percentileScored 2026-11-07
Fix Fixed ADC (NetScaler): 72.61, 63.18, 37.272Gateway (NetScaler): 72.61, 63.18

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
CitrixADC14.1 to before 72.61; 13.1 to before 63.18; 14.1 FIPS to before 72.61; 13.1 FIPS and NDcPP to before 37.27272.61, 63.18, 37.272Patch availableCNA
CitrixGateway14.1 to before 72.61; 13.1 to before 63.1872.61, 63.18Patch availableCNA
  • ADC VendorCitrix Affected 14.1 to before 72.61; 13.1 to before 63.18; 14.1 FIPS to before 72.61; 13.1 FIPS and NDcPP to before 37.272 Fixed in 72.61, 63.18, 37.272 Patch available CNA
  • Gateway VendorCitrix Affected 14.1 to before 72.61; 13.1 to before 63.18 Fixed in 72.61, 63.18 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*before 13.1-37.272VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*before 13.1-37.272VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*13.1 to before 13.1-63.18; 14.1 to before 14.1-72.61VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:14.1-66.68:*:*:*:fips:*:*:*14.1-66.68VulnerableCitrix
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*13.1 to before 13.1-63.18; 14.1 to before 14.1-72.61VulnerableCitrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions before 13.1-37.272 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* Versions before 13.1-37.272 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* Versions 13.1 to before 13.1-63.18; 14.1 to before 14.1-72.61 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:14.1-66.68:*:*:*:fips:*:*:* Versions 14.1-66.68 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* Versions 13.1 to before 13.1-63.18; 14.1 to before 14.1-72.61 Vulnerable ·Citrix

Remediation

  • Fix · CNA ADC (NetScaler) Fixed in 72.61, 63.18, 37.272
  • Fix · CNA Gateway (NetScaler) Fixed in 72.61, 63.18

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    NetScaler ADC, Gateway 37.272, 63.18, 72.61

    6 records Highest priority Priority CRITICAL 1 CRITICAL, 3 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-07427 Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of ServicePriority CRITICAL 95
    • TI-2026-07426 Insufficient input validation leading to memory overreadPriority MEDIUM 61
    • TI-2026-07604 Multiple Memory overflow vulnerabilities leading to unpredictable or erroneous behavior and Denial of ServicePriority MEDIUM 45
    Show all 6 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13474
  2. 2026-10-03 Alias added: GHSA-256v-mmj4-qqjc

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-2026-15872 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