---
title: "CVE-2023-6548: Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability"
url: https://erroneo.us/security/cve/CVE-2023-6548/
description: "CVE-2023-6548 (Citrix NetScaler ADC and NetScaler Gateway): Exploited in the wild (CISA KEV). Improper Control of Generation of Code ('Code Injection') in…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-01-17
date_modified: 2025-10-21
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-6548"
kev: true
cvss: 5.5
epss: 0.03191
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-6548: Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Citrix NetScaler ADC and NetScaler Gateway. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2024-01-17, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2024-01-24 ; treat that as the outer limit, not the target.
- EPSS 3.2% , percentile 88: FIRST’s model estimates a 3.2% chance of exploitation activity in the next 30 days, higher than 88% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.

## What it is

Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker with access to NSIP, CLIP or SNIP with management interface to perform Authenticated (low privileged) remote code execution on Management Interface.

## Affected products (CVE record)

- Cloud Software Group NetScaler ADC: 14.1 < 12.35, 13.1 < 51.15, 13.0 < 92.21, 13.1-FIPS < 37.176, 12.1-FIPS < 55.302, 12.1-NDcPP < 55.302
- Cloud Software Group NetScaler Gateway: 14.1 < 12.35, 13.1 < 51.15, 13.0 < 92.21

## Severity

- Citrix CVSS 3.1: 5.5 `CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`

## Exploitation

- CISA KEV: added 2024-01-17; federal due date 2024-01-24. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 3.19% probability of exploitation activity in the next 30 days; percentile 88.

## Sources

- [Listed in CISA KEV notes (support.citrix.com)](https://support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549)
- [CVE.org record CVE-2023-6548](https://www.cve.org/CVERecord?id=CVE-2023-6548)
- [NVD entry CVE-2023-6548](https://nvd.nist.gov/vuln/detail/CVE-2023-6548)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6548)

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Source page: https://erroneo.us/security/cve/CVE-2023-6548/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt