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Dossier · Vulnerability

Actively exploited · CISA KEV

CVE-2023-3519

  1. First PoC
  2. 1007 days →Metasploit
  3. 178 days →First cited attacker

Signals

Exploited in the wild
Yesadded 2023-07-19 · due 2023-08-09 · known ransomware use. An observation, not a forecast.
EPSS · 30-day forecast
99.7%Chance of exploitation in the next 30 days, 100th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD
not stated by sourcesNo NVD record yet.
Internet exposure
not stated by sourcesNo exposure census on this CVE's dispatches.

Exploits

15 known · links only

GitHub PoCs · by trust, then stars13

  1. BishopFox/CVE-2023-3519 ↗Trust ok 100

    RCE exploit for CVE-2023-3519

    ★ 228 · created 2023-07-21

  2. securekomodo/citrixInspector ↗Trust ok 100

    Passively fingerprint Citrix ADC / NetScaler ADC & Gateway builds and detect known CVEs — CVE-2023-3519, CitrixBleed 2/3, CVE-2026-8452, and CVE-2026-88771/88772 (KEV)

    ★ 96 · created 2023-07-20

  3. mandiant/citrix-ioc-scanner-cve-2023-3519 ↗Trust ok 100

    ★ 65 · created 2023-08-10

  4. telekom-security/cve-2023-3519-citrix-scanner ↗Trust ok 100

    Citrix Scanner for CVE-2023-3519

    ★ 54 · created 2023-07-20

  5. mr-r3b00t/CVE-2023-3519 ↗Trust ok 100

    ★ 13 · created 2023-07-21

  6. SalehLardhi/CVE-2023-3519 ↗Trust ok 100

    CVE-2023-3519 vuln for nuclei scanner

    ★ 11 · created 2023-07-21

  7. Chocapikk/CVE-2023-3519 ↗Trust ok 100

    Citrix ADC RCE CVE-2023-3519

    ★ 5 · created 2023-08-24

  8. dhammerg/CVE-2023-3519 ↗Trust ok 100

    Stack-Overflow on Citrix

    ★ 5 · created 2023-10-27

  9. KR0N-SECURITY/CVE-2023-3519 ↗Trust ok 100

    NetScaler (Citrix ADC) CVE-2023-3519 Scanner

    ★ 1 · created 2023-07-21

  10. passwa11/CVE-2023-3519 ↗Trust ok 100

    ★ 1 · created 2023-08-05

  11. rwincey/cve-2023-3519 ↗Trust ok 100

    ★ 1 · created 2023-08-06

  12. d0rb/CVE-2023-3519 ↗Trust ok 100

    CVE-2023-3519

    ★ 0 · created 2023-07-21

  13. JonaNeidhart/CVE-2023-3519-BackdoorCheck ↗Trust ok 100

    Script for checking CVE-2023-3519 for Backdoors

    ★ 0 · created 2023-08-31

Fake proof-of-concept repositories have been used to deliver malware to the researchers who run them. The trust verdict is our engine's heuristic over the repository (account age, what it ships, how its stars arrived); it is a reason to read the code first, not a finding about its author.

Metasploit1

  1. Citrix ADC (NetScaler) Forms SSO Target RCE ↗

    A vulnerability exists within Citrix ADC that allows an unauthenticated attacker to trigger a stack buffer overflow of the nsppe process by making a specially crafted HTTP GET request. Successful exploitation results in remote code execution as root.

    ruby · seen 2026-10-18

Nuclei1

  1. Citrix NetScaler ADC and NetScaler Gateway - Remote Code Execution ↗

    critical unauthenticated remote code execution (RCE) vulnerability affecting Citrix ADC (NetScaler ADC) and Citrix Gateway appliances configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server. Exploitation can lead to arbitrary code execution.

    yaml · seen 2026-10-18

On the wire

0 dispatches

No dispatch on our wire has named this CVE yet.

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