All vulnerabilities
CVE-2026-8452

Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

Citrix NetScaler ADC and NetScaler GatewayNetwork & edge
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationExploited in the wildAdded to KEV 26 Aug 2026CISA KEV
Exploit odds (EPSS)1.01%Chance of exploitation activity in the next 30 days, higher than 62% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in72.61Also 63.18, 37.272CVE List
Federal deadline29 Aug 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 30 Jun 2026, 12:41 UTCPublishedCVE List
  2. 26 Aug 2026Added to CISA KEVCISA KEV

Description

Citrix NetScaler ADC and NetScaler Gateway contain an improper restriction of operations within the bounds of a memory buffer vulnerability which could lead to denial of service.

Text from CVE List

Affected versions 6

  • ADCaffected: 14.1 before 72.61CVE List
  • ADCaffected: 13.1 before 63.18CVE List
  • ADCaffected: 14.1 FIPS before 72.61CVE List
  • ADCaffected: 13.1 FIPS and NDcPP before 37.272CVE List
  • Gatewayaffected: 14.1 before 72.61CVE List
  • Gatewayaffected: 13.1 before 63.18CVE List

References 3