By zerosday cve bot•September 8, 2022•
cves
CVE-2018-13374: Fortinet FortiOS and FortiADC Improper Access Control Vulnerability (Pentest Lab Guide)
CVE-2018-13374: Technical Deep-Dive (Auto Refreshed)
Generated on 2026-03-29T11:37:47.217Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).
Executive Technical Summary
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.
- Context preserved from previous revision: 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. Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
Technical Details
- CVE: CVE-2018-13374
- KEV date added: 2022-09-08
- KEV due date: 2022-09-29
- NVD published: 2019-01-22
- NVD modified: 2025-10-24
- MITRE modified: 2025-10-21
- CVSS base score: 4.3
- CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CVSS exploitability score: 2.8
- CVSS impact score: 1.4
- Attack vector: Network
- Attack complexity: Low
- Privileges required: Low
- User interaction: None
- Scope: Unchanged
- Confidentiality impact: Low
- Integrity impact: None
- Availability impact: None
Versions and Products Impacted
- fortinet / fortiadc (versions: >= 5.4.0, < 5.4.5)
- fortinet / fortiadc (versions: >= 6.0.0, < 6.0.2)
- fortinet / fortiadc (versions: 6.1.0)
- fortinet / fortios (versions: < 6.0.3)
- Fortinet / Fortinet FortiOS, fortiADC (versions: 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)
Weakness Classification
- CWE-732
- Improper Access Control
Repositories for Lab Validation (Public Examples)
- Ostorlab/KEV | stars: 608 | updated: 2026-03-23 | https://github.com/Ostorlab/KEV
Notes: Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs. - exploitintel/eip-mcp | stars: 2 | updated: 2026-03-25 | https://github.com/exploitintel/eip-mcp
Notes: Exploit Intelligence Platform MCP Server - Justjeff211/conti-ransomware-writeup | stars: 0 | updated: 2026-03-27 | https://github.com/Justjeff211/conti-ransomware-writeup
Notes: Conducted a full SOC investigation into a Conti ransomware compromise of an Exchange server using Splunk 8.2.2. Analysed 28,145 events across Windows Security, Sysmon, and IIS log sources to reconstruct the complete attack chain. Identified three exploited CVEs (CVE-2020-0796, CVE-2018-13374, CVE-2018-13379), located a trojanised cmd.exe
People and Organizations Mentioned
- fortinet
- FortiOS and FortiADC
- Ostorlab
- exploitintel
- Justjeff211
Practical Defensive Validation (Authorized Only)
- Use only isolated environments and systems you own or are explicitly authorized to test.
- Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
- Inventory fortinet / fortiadc (versions: >= 5.4.0, < 5.4.5) assets and confirm exact vulnerable versions with automated checks.
- Patch in staged environments and validate closure with scanners + service health checks.
- Map detections to MITRE ATT&CK tactics relevant to your environment and tune alert quality.
References
- NVD record: https://nvd.nist.gov/vuln/detail/CVE-2018-13374
- MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2018-13374
- CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
- KEV notes: https://www.fortiguard.com/psirt/FG-IR-18-157; https://nvd.nist.gov/vuln/detail/CVE-2018-13374
- https://fortiguard.com/advisory/FG-IR-18-157
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13374
- Repository example: https://github.com/Ostorlab/KEV
- Repository example: https://github.com/exploitintel/eip-mcp
- Repository example: https://github.com/Justjeff211/conti-ransomware-writeup
This content is for defensive security training and authorized validation only.