All vulnerabilities
CVE-2023-3519

Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

Citrix NetScaler ADC and NetScaler GatewayNetwork & edge
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationExploited in the wildAdded to KEV 19 Jul 2023. Known ransomware useCISA KEV
Exploit odds (EPSS)99.7%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in49.13Also 91.13, 37.159 and 1 moreCVE List
Federal deadline9 Aug 2023Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 18 Jul 2023Exploit code publicMetasploit
  2. 19 Jul 2023Added to CISA KEVCISA KEV
  3. 19 Jul 2023, 17:51 UTCPublishedCVE List

Public exploit code and templates 2

  • Exploit moduleCitrix ADC (NetScaler) Forms SSO Target RCE 18 Jul 2023Metasploit
  • Scanner templateCitrix NetScaler ADC and NetScaler Gateway - Remote Code ExecutionNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.

Text from CVE List

Affected versions 7

  • NetScaler ADCaffected: 13.1 before 49.13CVE List
  • NetScaler ADCaffected: 13.0 before 91.13CVE List
  • NetScaler ADCaffected: 13.1-FIPS before 37.159CVE List
  • NetScaler ADCaffected: 12.1-FIPS before 55.297CVE List
  • NetScaler ADCaffected: 12.1-NDcPP before 55.297CVE List
  • NetScaler Gatewayaffected: 13.1 before 49.13CVE List
  • NetScaler Gatewayaffected: 13.0 before 91.13CVE List

References 3