CVE-2023-3519 CRITICAL

CVE-2023-3519

Vendor Citrix
Product NetScaler ADC
Weakness CWE-94 · Code injection
KEV Status Known Exploited
Ransomware Used in campaigns
Published July 19, 2023
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Unauthenticated remote code execution

CISA mandated remediation

02CISA Required Action

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

Key dates

03Disclosure timeline

July 19, 2023 CVE published
October 21, 2025 Record updated