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Back to active CVEs
High · CVSS 9.8Known ExploitedCVE-2026-8452

Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of ServiceCVE-2026-8452

Answer in brief

CVE-2026-8452 records a High severity (CVSS 9.8) vulnerability in Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service. The current sources 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 29, 2026Source checked Oct 11, 2026First seen by HOL Jun 30, 2026Material review Aug 29, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 9.8
Exploitation
Known exploited
Affected software
7 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. Known-exploitation status makes exposure review time-sensitive. 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.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*Not reportedNot reported
cpe:2.3:a:citrix:netscaler_application_delivery_controller:14.1-66.68:*:*:*:fips:*:*:*Not reportedNot reported
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*Not reportedNot reported
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*Not reportedNot reported
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
NetScaler/ADCgeneric>=14.1 <72.61 || >=13.1 <63.18 || >=14.1 FIPS <72.61 || >=13.1 FIPS and NDcPP <37.27272.61, 63.18, 37.272
NetScaler/Gatewaygeneric>=14.1 <72.61 || >=13.1 <63.1872.61, 63.18

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for NetScaler/ADC, NetScaler/Gateway.
  2. 2Review 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

  1. Published upstream

    Jun 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jun 30, 2026

  4. Added to CISA KEV

    Aug 26, 2026

    Evidence: source:kev:kev:kev:record

Sources and claim methodology

  • Source referencesupport.citrix.com
  • CISA Known Exploited Vulnerabilities catalogcisa.gov
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.

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Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-119
Source
CVE List V5
Source checked
Oct 11, 2026
References
2 linked sources
Open source record