---
title: "CVE-2026-88775: Citrix NetScaler ADC & Gateway - Buffer Overflow"
description: "Citrix NetScaler ADC and Gateway before 14.1-73.37 and 13.1-64.23 contain a buffer overflow caused by improper memory handling, letting attackers cause denial of service or unpredictable behavior, exploit requires no special privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-88775/
---

# CVE-2026-88775 Citrix NetScaler ADC & Gateway - Buffer Overflow

Citrix NetScaler ADC and Gateway before 14.1-73.37 and 13.1-64.23 contain a buffer overflow caused by improper memory handling, letting attackers cause denial of service or unpredictable behavior, exploit requires no special privileges.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.38% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88775)

## Details

Type

Buffer Overflow

Impact

Denial Of Service

CVSS vector

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

Published

27 September 2026

Updated

15 October 2026

Weakness

[CWE-120](https://cwe.mitre.org/data/definitions/120.html)

## Vendor fix

Upgrade to versions 14.1-73.37 or later and 13.1-64.23 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-88775](https://nvd.nist.gov/vuln/detail/CVE-2026-88775)
- [https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix\_NetScaler\_ADC\_and\_Citrix\_NetScaler\_Gateway\_Security\_Bulletin\_for\_CVE\_2026\_88771\_CVE\_2026\_88772\_CVE\_2026\_88773\_CVE\_2026\_88774\_CVE\_2026\_88775\_CVE\_2026\_88776\_CVE\_2026\_88777\_and\_CVE\_2026\_88778](https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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