Risk Letters

Exploited vulnerability

CVE-2026-8452

TLP:CLEAR

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

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.

Facts

  • Vendor: Citrix
  • Product: NetScaler ADC and NetScaler Gateway
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 1 %
  • On CISA's Known Exploited Vulnerabilities list since: 26 August 2026
  • First known exploitation: 26 August 2026
  • CISA's deadline for US federal agencies: 29 August 2026
  • Weakness: CWE-119
  • First seen by Risk Letters: 26 August 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD