[ CVE-2023-3519 · Published 19 Jul 2023 ]
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability
Exploited · CISA KEV CVSS 9.8
EPSS 100%No fix listed yet
[ Why it matters ]Priority signals
- Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2023-07-19
- Known to be used in ransomware campaigns
- EPSS: 100% chance of exploitation in the next 30 days (higher than 100% of CVEs)
- Critical severity: CVSS 9.8
[ Description ]Official description
Unauthenticated remote code execution
CISA: Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
[ Fixes ]Fixes and patches
CISA required action (US federal deadline 9 Aug 2023): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.
[ References ]References
- packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
- support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-fo…Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource