Risk Letters

Exploited vulnerability

CVE-2023-6549

TLP:CLEAR

Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for a denial-of-service when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.

Facts

  • Vendor: Citrix
  • Product: NetScaler ADC and NetScaler Gateway
  • CVSS: 8.2
  • EPSS (probability of exploitation within 30 days): 57.6 %
  • On CISA's Known Exploited Vulnerabilities list since: 17 January 2024
  • First known exploitation: 17 January 2024
  • CISA's deadline for US federal agencies: 7 February 2024
  • Weakness: CWE-119
  • First seen by Risk Letters: 17 January 2024

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