# CVE-2026-88776: Citrix NetScaler ADC memory overflow

Source: https://junglewise.ai/threats/cve-2026-88776-memory-overflow-vulnerability-vulnerability-in-citrix-netscaler  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-27. Updated: 2026-09-27  
License: CC BY 4.0 with a link back

CVE-2026-88776 · Severity: info · Published 2026-09-27

Citrix NetScaler ADC and Gateway are appliances used to manage and secure network traffic for enterprise applications. A memory overflow vulnerability in these products could allow an attacker to cause unpredictable behavior or denial of service, disrupting access to critical business applications.

Technologies: [Citrix NetScaler ADC](https://junglewise.ai/threats/technologies/netscaler-adc), [Citrix NetScaler Gateway](https://junglewise.ai/threats/technologies/gateway). Vendors: [Citrix](https://junglewise.ai/threats/vendors/citrix).

## Quick answers

**Is CVE-2026-88776 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88776 being exploited in the wild.

**How severe is CVE-2026-88776?** Informational severity, published 27 September 2026.

**Which products and versions are affected?** Citrix NetScaler ADC before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, before 13.1.37.279 FIPS and NDcPP; Citrix NetScaler Gateway before 14.1-73.37, before 13.1-64.23.

**Is there a fix for CVE-2026-88776?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-88776 attacked?** It is in a network appliance.

**Am I affected by CVE-2026-88776?** Check whether you run Citrix NetScaler ADC or Citrix NetScaler Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A memory overflow vulnerability exists in Citrix NetScaler ADC and Gateway that can result in unpredictable behavior or denial of service. The vulnerability affects multiple versions across both products and FIPS builds. Exploitation leads to service disruption without indication of remote code execution capability.

## Affected products

- Citrix NetScaler ADC before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, before 13.1.37.279 FIPS and NDcPP
- Citrix NetScaler Gateway before 14.1-73.37, before 13.1-64.23

## Timeline

- 2026-09-27: disclosed: CVE-2026-88776 published

## References

- [https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096](https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096)

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