VulnerabilityAnalyzed
CVE-2019-5591
Fortinet FortiOS Default Configuration Vulnerability
KEVMEDIUM 6.5EPSS 18.4%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A Default Configuration vulnerability in FortiOS may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the LDAP server.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 18.42% probability · 97th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022 · used in ransomware campaigns
- Weakness
- CWE-306
- Affected
- fortinet/fortios
- Source
- psirt@fortinet.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2019-5591
References
- https://www.fortiguard.com/psirt/FG-IR-19-037Mitigation, Vendor Advisory
- https://www.fortiguard.com/psirt/FG-IR-19-037Mitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5591US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.