What is CVE-2023-3519?

CVE-2023-3519 is a critical-severity vulnerability in Citrix Netscaler Adc, classified under Code Injection. CVSS score: 9.8/10. Published 2023-07-19.

How severe is CVE-2023-3519?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-3519 known to be exploited?

Yes. CVE-2023-3519 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-07-19), indicating it is being actively exploited. 70 public proof-of-concept repositories are indexed.

RCE in Citrix Netscaler Adc

CVE-2023-3519

Unauthenticated remote code execution

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.936 (99.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Citrix Netscaler Adc — versions 13.1, 13.0, 13.1-FIPS
Citrix Netscaler Gateway — versions 13.1, 13.0

Weakness classification (CWE)

CWE-94 — Code Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-07-19. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-08-09.

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

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-3519?: CVE-2023-3519 is a critical-severity vulnerability in Citrix Netscaler Adc, classified under Code Injection. CVSS score: 9.8/10. Published 2023-07-19.
How severe is CVE-2023-3519?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-3519 known to be exploited?: Yes. CVE-2023-3519 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-07-19), indicating it is being actively exploited. 70 public proof-of-concept repositories are indexed.