Is CVE-2023-3519 actively exploited?

Yes. CVE-2023-3519 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2023-3519 be exploited remotely?

The attack vector of CVE-2023-3519 has not been classified yet.

What is the CVSS score of CVE-2023-3519?

CVE-2023-3519 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2023-3519

HIGHCISA KEVIN THE WILD

CVE-2023-3519

Published: July 19, 2023

EPSS:93.74%probability of exploitation in 30 daysPercentile:99.8th

Official Description

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

NVD Source

CISA KEV Advisory

Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

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

Added to KEV: 2023-07-19Federal patch deadline: 2023-08-09⚠ USED IN RANSOMWARE CAMPAIGNS

Required Action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Risk Analysis

A critical code injection vulnerability exists in Citrix NetScaler ADC and NetScaler Gateway, enabling unauthenticated remote code execution. This flaw poses a severe risk due to its ability to be exploited without authentication. The very high EPSS score of 0.93741 and its presence in the KEV catalog confirm active exploitation and high likelihood of future attacks.

This vulnerability has been actively exploited in the wild and is listed in CISA's Known Exploited Vulnerabilities catalog. It is remotely exploitable without requiring authentication.

Recommended Action

Administrators must apply the latest security updates for Citrix NetScaler ADC and NetScaler Gateway immediately. Implement network segmentation and restrict access to these devices.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-3519 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2023-3519 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.