CVE-2023-3519

CRITICALNVD 9.89.8—Trending — 4 sources updated this weekExploited in the wild

9.8

Unauthenticated remote code execution

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.8%
KEV: ⚠ Exploited

Published

July 19, 2023

Last Modified

October 24, 2025

Advisory Details (3)

Auto-updated Jun 1, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519

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https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467

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Packet Storm

http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 11:51 UTCEG score recompute
2026-06-07 11:51 UTCGHSA enrichment
2026-06-07 08:09 UTCEG score recompute
2026-06-07 08:09 UTCGHSA enrichment
2026-06-07 04:26 UTCEG score recompute
2026-06-07 04:26 UTCGHSA enrichment
2026-06-07 00:43 UTCEG score recompute
2026-06-07 00:43 UTCGHSA enrichment
2026-06-06 21:00 UTCEG score recompute
2026-06-06 21:00 UTCGHSA enrichment
2026-06-06 17:17 UTCEG score recompute
2026-06-06 17:17 UTCGHSA enrichment
2026-06-06 13:34 UTCEG score recompute
2026-06-06 13:34 UTCGHSA enrichment
2026-06-06 09:51 UTCEG score recompute
2026-06-06 09:51 UTCGHSA enrichment
2026-06-06 06:09 UTCEG score recompute
2026-06-06 06:09 UTCGHSA enrichment
2026-06-06 02:26 UTCEG score recompute
2026-06-06 02:26 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (1 Metasploit module) (8 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCdhammerg/CVE-2023-3519
First seen Oct 27, 2023
Stack-Overflow on Citrix
Open source ↗
GitHub PoCChocapikk/CVE-2023-3519
First seen Aug 24, 2023
Citrix ADC RCE CVE-2023-3519
Open source ↗
GitHub PoCmandiant/citrix-ioc-scanner-cve-2023-3519
First seen Aug 10, 2023
Open source ↗
GitHub PoCmr-r3b00t/CVE-2023-3519
First seen Jul 21, 2023
Open source ↗
GitHub PoCSalehLardhi/CVE-2023-3519
First seen Jul 21, 2023
CVE-2023-3519 vuln for nuclei scanner
Open source ↗
GitHub PoCBishopFox/CVE-2023-3519
First seen Jul 21, 2023
RCE exploit for CVE-2023-3519
Open source ↗
GitHub PoCtelekom-security/cve-2023-3519-citrix-scanner
First seen Jul 20, 2023
Citrix Scanner for CVE-2023-3519
Open source ↗
GitHub PoCsecurekomodo/citrixInspector
First seen Jul 20, 2023
Accurately fingerprint and detect vulnerable (and patched!) versions of Netscaler / Citrix ADC to CVE-2023-3519
Open source ↗
Metasploitexploit/freebsd/http/citrix_formssso_target_rce✓ verified
First seen Jul 18, 2023
Citrix ADC (NetScaler) Forms SSO Target RCE
Open source ↗
Nucleihttp/cves/2023/CVE-2023-3519.yaml
First seen Jan 1, 2023
Citrix NetScaler ADC and NetScaler Gateway - Remote Code Execution
Open source ↗

Frequently asked(6)

What is CVE-2023-3519?

CVE-2023-3519 is a critical vulnerability published on July 19, 2023. Unauthenticated remote code execution

When was CVE-2023-3519 disclosed?

CVE-2023-3519 was first published in the National Vulnerability Database on July 19, 2023, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-3519 actively exploited?

Yes. CISA added CVE-2023-3519 to the Known Exploited Vulnerabilities catalog on July 19, 2023, affecting Citrix NetScaler ADC and NetScaler Gateway. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

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

CVE-2023-3519 has a CVSS v3 base score of 9.8 (NVD).

Which products are affected by CVE-2023-3519?

CVE-2023-3519 affects Citrix NetScaler ADC and NetScaler Gateway. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2023-3519?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-3519, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-3519

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Is Your Infrastructure Affected by CVE-2023-3519?

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CVE-2023-3519

📅 Published

🔄 Last Modified

📋 Advisory Details (3)