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Fortinet CVE-2026-39814

| EUVDEUVD-2026-22346 MEDIUM
Relative Path Traversal (CWE-23)
2026-04-14 fortinet GHSA-6q7w-cjq4-j969
6.7
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
6.7 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Analysis Generated
Apr 14, 2026 - 17:05 vuln.today
CVSS changed
Apr 14, 2026 - 16:22 NVD
6.2 (MEDIUM) 6.7 (MEDIUM)
EUVD ID Assigned
Apr 14, 2026 - 16:00 euvd
EUVD-2026-22346
Analysis Generated
Apr 14, 2026 - 16:00 vuln.today
CVE Published
Apr 14, 2026 - 15:38 nvd
MEDIUM 6.7

DescriptionCVE.org

A relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.1 through 7.4.12, FortiWeb 7.2.7 through 7.2.12, FortiWeb 7.0.10 through 7.0.12 may allow attacker to execute unauthorized code or commands via <insert attack vector here>

AnalysisAI

Local privilege escalation in Fortinet FortiWeb 7.0.10-8.0.2 allows high-privileged local attackers to execute arbitrary code or commands through relative path traversal, exploiting improper file path validation with CVSS 6.7 (high confidentiality, integrity, and availability impact). No public exploit code or active exploitation confirmed at time of analysis.

Technical ContextAI

CWE-23 (relative path traversal) occurs when an application fails to properly normalize or validate file paths, allowing attackers to reference files or directories outside intended boundaries using relative path components (e.g., '../'). In FortiWeb, an authenticated local administrator can manipulate relative paths during file operations, potentially accessing or executing unauthorized binaries or configuration files. FortiWeb is a web application firewall (WAF) appliance; this vulnerability affects the administrative interface or local system access, not the WAF filtering engine itself. The vulnerability spans multiple major versions (7.0, 7.2, 7.4, 7.6, and 8.0), indicating a systemic path handling flaw rather than a version-specific issue.

RemediationAI

Upgrade FortiWeb to patched versions released by Fortinet; consult Fortinet security advisory FG-IR-26-114 (https://fortiguard.fortinet.com/psirt/FG-IR-26-114) for the exact fixed version applicable to your branch. As an interim mitigation, restrict local administrative access to FortiWeb systems and audit admin account activity for suspicious file operations. Implement principle of least privilege for admin roles.

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CVE-2026-39814 vulnerability details – vuln.today

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