NetScaler ADC and Gateway

CVE-2026-8452: Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service

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

Published

ExploitedYes, in CISA KEVAdded 26 Aug 2026
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 4.0 8.8
EPSS1.0%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branchFixed in
ADC 14.172.61 or later
ADC 13.163.18 or later
ADC 14.1 FIPS72.61 or later
ADC 13.1 FIPS and NDcPP37.272 or later
Gateway 14.172.61 or later
Gateway 13.163.18 or later

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

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

Exploitation

CISA lists this CVE as exploited in the wild since 26 Aug 2026.

Sources

KEV status, EPSS score and vendor data refreshed automatically, last on 11 Oct 2026.

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