Risk Letters

Exploited vulnerability

CVE-2026-3055

TLP:CLEAR

Citrix NetScaler Out-of-Bounds Read Vulnerability

Citrix NetScaler ADC (formerly Citrix ADC), NetScaler Gateway (formerly Citrix Gateway) and NetScaler ADC FIPS and NDcPP contain an out-of-bounds reads vulnerability when configured as a SAML IDP leading to memory overread.

Facts

  • Vendor: Citrix
  • Product: NetScaler
  • CVSS: 9.3
  • EPSS (probability of exploitation within 30 days): 91.5 %
  • On CISA's Known Exploited Vulnerabilities list since: 30 March 2026
  • First known exploitation: 30 March 2026
  • CISA's deadline for US federal agencies: 2 April 2026
  • Weakness: CWE-125
  • First seen by Risk Letters: 30 March 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

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