CVEvulnerability

CVE-2019-5591

6.5 MEDIUM Known exploited Published 2020-08-14 Modified 2026-08-15 Official page ↗

CISA Known Exploited Vulnerability

Fortinet FortiOS Default Configuration Vulnerability — Fortinet FortiOS

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.

Added to KEV
2021-11-03
Remediation due
2022-05-03
Ransomware use
Known
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2019-5591
Status
Analyzed
Published
2020-08-14
Last modified
2026-08-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
3.3 LOW — AV:A/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-306

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.

Affected configurations

• fortinet fortios (<= 6.2.0)

Related

Weakness · CWE (1)

  • CWE-306 Missing Authentication for Critical Functionality weakness

References