CVE-2024-5491

HIGH

Published Jul 10, 2024 Modified Jul 25, 2025

Description

Denial of Service in NetScaler ADC and NetScaler Gateway in NetScaler

Is your site exposed to CVE-2024-5491?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
citrix	netscaler_application_delivery_controller	12.1 — 12.1-55.304
citrix	netscaler_application_delivery_controller	12.1 — 12.1-55.304
citrix	netscaler_application_delivery_controller	12.1 — 13.0-92.31
citrix	netscaler_application_delivery_controller	13.1 — 13.1-37.183
citrix	netscaler_application_delivery_controller	13.1 — 13.1-53.17
citrix	netscaler_application_delivery_controller	14.1 — 14.1-25.53
citrix	netscaler_gateway	12.1 — 13.0-92.31
citrix	netscaler_gateway	13.1 — 13.1-53.17
citrix	netscaler_gateway	14.1 — 14.1-25.53

References

Advisories & Patches

https://support.citrix.com/external/article?articleUrl=CTX677944-netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20245491-and-cve20245492

Other References

https://support.citrix.com/article/CTX677944/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20245491-and-cve20245492 https://support.citrix.com/article/CTX677944/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20245491-and-cve20245492

Frequently Asked Questions

What is CVE-2024-5491? +

Denial of Service in NetScaler ADC and NetScaler Gateway in NetScaler It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-5491? +

CVE-2024-5491 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-5491? +

CVE-2024-5491 affects products from citrix, specifically: netscaler_application_delivery_controller, netscaler_gateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-5491? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-6543 9.8

Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured …

CVE-2026-8655 9.8

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service …

CVE-2026-8452 9.8

Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the …

CVE-2025-7775 9.8

Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler …

CVE-2025-7776 9.8

Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when …

CVE-2025-5349 8.8

Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway