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Forticlient CVE-2026-24018

HIGH
UNIX Symbolic Link (Symlink) Following (CWE-61)
2026-03-10 psirt@fortinet.com
7.8
CVSS 3.1 · NVD
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Create malicious symlink in predictable FortiClient directory
  2. Exploit
    Execute FortiClient operation triggering symlink follow
  3. Execution
    Write arbitrary file with root privileges
  4. Impact
    Escalate to root access

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling UNIX symlink resolution
Exploitation Conditions

Local unprivileged user account on system with FortiClientLinux 7.2.2–7.2.12 or 7.4.0–7.4.4 installed. Attacker must have write access to directories where FortiClient creates or manages files during normal operation.

Impact

CVSS 7.8 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: Low. User interaction: None. Exploitable via local access.

Exploit ScenarioDerived

An attacker could exploit this vulnerability to a local and unprivileged user to escalate their privileges to root.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

following vulnerability in Fortinet FortiClientLinux 7.4.0 versions up to 7.4.4 contains a vulnerability that allows attackers to a local and unprivileged user to escalate their privileges to root (CVSS 7.8).

RemediationAI

Monitor vendor advisories for a patch.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

affects following vulnerability in Fortinet FortiClientLinux 7.4.0. A UNIX symbolic link (Symlink) following vulnerability in Fortinet FortiClientLinux 7.4.0 through 7.4.4, FortiClientLinux 7.2.2 through 7.2.12 may allow a local and unprivileged user to escalate their privileges to root.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH
AV:L/AC:L/PR:L/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
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

A UNIX symbolic link (Symlink) following vulnerability in Fortinet FortiClientLinux 7.4.0 through 7.4.4, FortiClientLinux 7.2.2 through 7.2.12 may allow a local and unprivileged user to escalate their privileges to root.

Executive ViewAI

Why It Matters

FortiClient Linux versions 7.4.0-7.4.4 contain a privilege escalation vulnerability that could allow unauthorized users to gain root access to affected systems. This poses a significant risk to organizations using FortiClient on Linux endpoints, as compromised systems could be used to access sensitive corporate resources and circumvent security controls.

Business Impact: High
Compensating Controls

Restrict local user account creation and access on affected Linux systems; implement strict access controls and privilege separation; monitor and log all privilege escalation attempts; consider temporary replacement of FortiClient with alternative endpoint protection solutions; isolate affected systems from critical network segments until patched; disable unnecessary local user accounts on affected endpoints.

Threat Intelligence Overview

EPSS Score
0.0%
Top 98% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
High

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +39
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Affected Products (CPE)CVE.org

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:linux:*:*
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:linux:*:*
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