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TI-2023-03284 Aliases CVE-2023-3519GHSA-m4j4-rmj5-w5gp

Unauthenticated remote code execution in Citrix NetScaler ADC

Priority CRITICAL 100Exploited in the wildCWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

Unauthenticated remote code execution

Why it matters now

Exploitation Active In CISA KEV since 2023-07-19CISA due date 2023-08-09Known ransomware use
EPSS 0.99749 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed NetScaler ADC (Citrix): 49.13, 91.13, 37.159 +1NetScaler Gateway (Citrix): 49.13, 91.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
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
CitrixNetScaler ADC13.1 to before 49.13; 13.0 to before 91.13; 13.1-FIPS to before 37.159; 12.1-FIPS to before 55.297; 12.1-NDcPP to before 55.29749.13, 91.13, 37.159, 55.297Patch availableCNA
CitrixNetScaler Gateway13.1 to before 49.13; 13.0 to before 91.1349.13, 91.13Patch availableCNA
  • NetScaler ADC VendorCitrix Affected 13.1 to before 49.13; 13.0 to before 91.13; 13.1-FIPS to before 37.159; 12.1-FIPS to before 55.297; 12.1-NDcPP to before 55.297 Fixed in 49.13, 91.13, 37.159, 55.297 Patch available CNA
  • NetScaler Gateway VendorCitrix Affected 13.1 to before 49.13; 13.0 to before 91.13 Fixed in 49.13, 91.13 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*12.1 to before 12.1-55.297VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*12.1 to before 12.1-55.297VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*13.0 to before 13.0-91.13VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*13.1 to before 13.1-37.159VulnerableCitrix
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*13.1 to before 13.1-49.13VulnerableCitrix
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*13.0 to before 13.0-91.13; 13.1 to before 13.1-49.13VulnerableCitrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions 12.1 to before 12.1-55.297 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* Versions 12.1 to before 12.1-55.297 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* Versions 13.0 to before 13.0-91.13 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* Versions 13.1 to before 13.1-37.159 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* Versions 13.1 to before 13.1-49.13 Vulnerable ·Citrix
  • cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* Versions 13.0 to before 13.0-91.13; 13.1 to before 13.1-49.13 Vulnerable ·Citrix

Remediation

  • Fix · CNA NetScaler ADC (Citrix) Fixed in 49.13, 91.13, 37.159, 55.297
  • Fix · CNA NetScaler Gateway (Citrix) Fixed in 49.13, 91.13

Fixed in the same release

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

  • Release ·

    Citrix NetScaler Gateway 49.13, 91.13

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

    Other records, highest priority first

    • TI-2023-03237 Reflected cross-site scripting (XSS) in Citrix NetScaler ADCPriority MEDIUM 41
    • TI-2023-03238 Privilege Escalation to root administrator (nsroot)Priority LOW 39
    Show all 3 records →

Timeline

  1. 2023-07-19 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2023-3519
  3. 2026-10-03 Alias added: GHSA-m4j4-rmj5-w5gp

References

Exploit 1

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-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
  • 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