Risk Letters

Exploited vulnerability

CVE-2019-5591

TLP:CLEAR

Fortinet FortiOS Default Configuration Vulnerability

Fortinet FortiOS contains a default configuration vulnerability that may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the Lightweight Directory Access Protocol (LDAP) server.

Facts

  • Vendor: Fortinet
  • Product: FortiOS
  • CVSS: 6.5
  • EPSS (probability of exploitation within 30 days): 18.6 %
  • On CISA's Known Exploited Vulnerabilities list since: 3 November 2021
  • First known exploitation: 3 November 2021
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 3 May 2022
  • Weakness: CWE-306
  • First seen by Risk Letters: 3 November 2021

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