Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service (CVE-2026-8452) | HOL Guard CVE

Critical · CVSS 9.8CVE-2026-8452

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

Answer in brief

CVE-2026-8452 records a Critical severity (CVSS 9.8) vulnerability in Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service. The current sources do not mark it as known exploited. The current feed maps NetScaler/ADC (generic), NetScaler/Gateway (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 30, 2026Updated Aug 26, 2026Source checked Aug 26, 2026First seen by HOL Jun 30, 2026Material review Aug 26, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps NetScaler/ADC (generic), NetScaler/Gateway (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
NetScaler/ADCgeneric	>=14.1 <72.61 \|\| >=13.1 <63.18 \|\| >=14.1 FIPS <72.61 \|\| >=13.1 FIPS and NDcPP <37.272	72.61, 63.18, 37.272
NetScaler/Gatewaygeneric	>=14.1 <72.61 \|\| >=13.1 <63.18	72.61, 63.18

Recommended response

Check inventory. Check lockfiles and deployed manifests for NetScaler/ADC, NetScaler/Gateway.
Review the reported fix. Update NetScaler/ADC to 72.61; NetScaler/Gateway to 72.61 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jun 30, 2026

Sources and claim methodology

Upstream source description

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

Quoted source text, attributed separately from HOL analysis.