CVE-2023-3519

criticalpriority · act · 90OT risk · criticalKEV · exploitedEU KEV · CNWEPSS 0.997 · 100 %ileexploit · functionalDEEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 14 exploits · functional

Likely / severe?

99.7% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

20 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2023-07-19remediate by 2023-08-09

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

EU KEVflagged by CNWreported 2025-01-23patched 2023-07-18ransomware

EPSS · scored 2026-10-26

Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

Unauthenticated remote code execution

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@citrix.comexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-94US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (14)

Public proof-of-concept and weaponised exploit code.

exploit/freebsd/http/citrix_formssso_target_rceCitrix ADC (NetScaler) Forms SSO Target RCEfunctional · metasploit
BishopFox/CVE-2023-3519RCE exploit for CVE-2023-3519PoC · poc_in_github
Chocapikk/CVE-2023-3519Citrix ADC RCE CVE-2023-3519PoC · poc_in_github
JonaNeidhart/CVE-2023-3519-BackdoorCheckScript for checking CVE-2023-3519 for BackdoorsPoC · poc_in_github
KR0N-SECURITY/CVE-2023-3519NetScaler (Citrix ADC) CVE-2023-3519 ScannerPoC · poc_in_github
SalehLardhi/CVE-2023-3519CVE-2023-3519 vuln for nuclei scannerPoC · poc_in_github

affected products (20)

Products and version ranges known to be affected.

Citrix NetScaler ADC12.1-FIPS → 55.297enisa_euvdEU
Citrix NetScaler ADC12.1-NDcPP → 55.297enisa_euvdEU
Citrix NetScaler ADC13.0 → 91.13enisa_euvdEU
Citrix NetScaler ADC13.1 → 49.13enisa_euvdEU
Citrix NetScaler ADC13.1-FIPS → 37.159enisa_euvdEU
Citrix NetScaler Gateway13.0 → 91.13enisa_euvdEU
Citrix NetScaler Gateway13.1 → 49.13enisa_euvdEU
Citrix Systems Inc. Citrix ADC12.1-FIPS → 12.1-55.297fstec_bduRU
Citrix Systems Inc. Citrix ADC12.1-NDcPP → 12.1-55.297fstec_bduRU
Citrix Systems Inc. Citrix ADC13.0 → 13.0-91.13fstec_bduRU
Citrix Systems Inc. Citrix ADC13.1 → 13.1-49.13fstec_bduRU
Citrix Systems Inc. Citrix ADC13.1-FIPS → 13.1-37.159fstec_bduRU
Citrix Systems Inc. Citrix Gateway13.0 → 13.0-91.13fstec_bduRU
Citrix Systems Inc. Citrix Gateway13.1 → 13.1-49.13fstec_bduRU
citrix netscaler application delivery controller12.1 → 12.1-55.297nvdUScpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:*:*:*:*
citrix netscaler application delivery controller13.0 → 13.0-91.13nvdUScpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:*:*:*:*
citrix netscaler application delivery controller13.1 → 13.1-37.159nvdUScpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:*:*:*:*
citrix netscaler application delivery controller13.1 → 13.1-49.13nvdUScpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:*:*:*:*
citrix netscaler gateway13.0 → 13.0-91.13nvdUScpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
citrix netscaler gateway13.1 → 13.1-49.13nvdUScpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1776Citrix Systems ADC und Citrix Systems Gateway: Mehrere SchwachstellenDeutsch2023-07-18csaf · cert_bundDE
Ein Angreifer aus dem angrenzenden Netz oder ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Citrix Systems ADC und Citrix Systems Citrix Gateway ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, seine Privilegien zu erweitern oder beliebigen Programmcode auszuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd cert_bund NVD CVE.org MITRE

published 2023-07-19modified 2026-08-05

related (10,427)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-0322US	high7.2OT critical	1.74% (78th)	KEV	2026-10-14
A remote code execution (RCE) vulnerability in the management interface of Palo Alto Networks PAN-OS® software enables an authenticated attacker with network access to execute arbi…
CVE-2026-58400US	—OT critical	1.19% (68th)	—	2026-09-03
GeoNetwork is a catalog application to manage spatially referenced resources. Prior to versions 4.4.12 and 4.2.17, the Saxon XSLT processor used to render formatters is configured…
CVE-2026-60004US	—OT critical	24.0% (98th)	KEV	2026-08-26
Gitea before 1.27.1 allows remote code execution via the diffpatch API through Git hook installation.
CVE-2026-72530US	—OT critical	1.69% (77th)	KEV	2026-08-19
A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could use a special…
CVE-2026-65660US	high8.8OT critical	8.19% (95th)	KEV	2026-08-11
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

+10422 more

references (8)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan