How severe is CVE-2023-3519?

CVE-2023-3519 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 99.7% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2023-3519: Citrix NetScaler ADC and NetScaler Gateway Code

CISA Known Exploited Vulnerabilities

Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2023-07-19

Remediation due

2023-08-09

Ransomware

Known use

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

CISA notes
https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467; https://nvd.nist.gov/vuln/detail/CVE-2023-3519

Description

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

Severity

CVSS 3.1 · CNA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Citrix	NetScaler ADC	13.1 to <49.13 13.0 to <91.13 13.1-FIPS to <37.159 12.1-FIPS to <55.297 12.1-NDcPP to <55.297
Citrix	NetScaler Gateway	13.1 to <49.13 13.0 to <91.13

References

2 Links

Other references

Record Details

Published

2023-07-19

Last updated

2026-08-05

Assigner (CNA)

Citrix

Credited to

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Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-94 · Code Injection

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.