Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 38.1%; technical severity is CVSS 4.3.
A Improper Access Control in Fortinet FortiOS 6.0.2, 5.6.7 and before, FortiADC 6.1.0, 6.0.0 to 6.0.1, 5.4.0 to 5.4.4 allows attacker to obtain the LDAP server login credentials configured in FortiGate via pointing a LDAP server connectivity test request to a rogue LDAP server instead of the configured one.
Who should care
- Teams operating Fortiadc, FortiOS, FortiOS and FortiADC
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether Fortiadc, FortiOS, FortiOS and FortiADC is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Vendor advisory from fortiguard.com
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Treatment intelligence
Remediation intelligence
Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.
Verification noteAutomated link verification has not completed for this guidance yet.
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CWE
- CWE-732
- Affected versions
- Fortinet Fortiadc (Start Including 5.4.0, End Excluding 5.4.5 | Start Including 6.0.0, End Excluding 6.0.2 | Version 6.1.0); Fortinet FortiOS (End Excluding 6.0.3); Fortinet FortiOS and FortiADC
- Fixed versions
- Fortinet Fortiadc (Fixed from 5.4.5, 6.0.2); Fortinet FortiOS (Fixed from 6.0.3)
- Published
- 22 January 2019
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 38.1%
- Signal calculated at 75