Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service

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Overview

Original source data

Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server

Affected products and scope

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Technical details

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Exploitability

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Technical impact

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Business impact

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Remediation

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Detection

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Sources (8)

GCVE / Vulnerability-Lookup

CVE Program

NetScaler (CNA)

NVD

FIRST EPSS

CISA Known Exploited Vulnerabilities

known-exploited-vulnerabilities-catalog

support.citrix.com

High

Provider: NetScaler
Primary affected product: ADC
Affected versions: 14.1 – < 72.61, 13.1 – < 63.18, 14.1 FIPS – < 72.61, 13.1 FIPS and NDcPP – < 37.272
Published: 06/30/2026

Exploitation status: KEV
Patch status: Fix available
CISA KEV date: -
CISA KEV due date: -

Estimated exploitation probability (EPSS): 0.01606
Estimated exploitation percentile: 74.76%
Attack capability: Remote

Products using this technology (0): -

Classification
Equivalent IDs: GHSA-r7wg-r5wj-c765 BDU:2026-09281

CVSS4

(CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)

Attack complexity: Low
Attack vector: Network
Confidentiality impact: High
Integrity impact: Low
Privileges required: None
User interaction required: None

CVSS3

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

Attack complexity: Low
Attack vector: Network
Confidentiality impact: High
Integrity impact: High
Privileges required: None
User interaction required: None

CVSS2

(Not available)

Attack complexity: -
Attack vector: -
Confidentiality impact: -
Integrity impact: -
Privileges required: -
User interaction required: -

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