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Fortinet FortiSOAR CVE-2026-84385

| EUVDEUVD-2026-72925 MEDIUM
Improper Access Control (CWE-284)
2026-09-08 fortinet GHSA-f92g-h47f-9jx7
5.4
CVSS 3.1 · Vendor: fortinet
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Attack ChainAIDerived

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

  1. Access
    Obtain low-privilege FortiSOAR credentials
  2. Exploit
    Authenticate to FortiSOAR network interface
  3. Execution
    Invoke unguarded endpoint bypassing role check
  4. Impact
    Access or modify restricted data/operations

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Authentication is required: exploitation demands a valid FortiSOAR user account with low-privilege role membership (CVSS PR:L). The vulnerability is reachable over the network without additional complexity or user interaction, meaning any network-accessible FortiSOAR deployment is in scope. Both PaaS (cloud-hosted) and on-premise deployments are affected. The specific feature or configuration that must be active to trigger the vulnerability is unknown due to an unfilled placeholder in the vendor description; defenders cannot rule out default-configuration exposure. Exploitation is limited to confidentiality-low and integrity-low impacts within the FortiSOAR system only (S:U, no lateral scope change). There is no availability impact component.

Impact

The CVSS 3.1 base score of 5.4 (Medium) reflects the realistic risk profile: AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. An authenticated low-privilege user with network access to the FortiSOAR interface can exploit this without complexity or user interaction, gaining limited incremental read and write access. Despite the broad affected version range (four major branches, both deployment types), the impact ceiling is constrained by S:U (unchanged scope) and L-rated C/I metrics, indicating partial rather than full compromise. No EPSS score is provided in the input, KEV status is absent, and no POC is publicly identified - all suggesting this has not seen broad opportunistic exploitation as of analysis time. The primary real-world risk is insider threat or credential-compromise scenarios where an attacker who has obtained a low-privilege FortiSOAR account uses this flaw to access data or functionality beyond their intended role. The incomplete description (placeholder text) prevents precise impact scoping, reducing confidence in severity calibration.

Exploit ScenarioDerived

An attacker who has obtained low-privilege credentials to a FortiSOAR instance - through phishing, credential stuffing, or an insider account - authenticates over the network to the FortiSOAR web interface or API. They invoke an undisclosed API endpoint or platform feature that does not correctly verify role boundaries, gaining read or write access to data or operations reserved for higher-privilege roles. No public exploit code is identified at time of analysis, so exploitation likely requires knowledge of the specific unguarded endpoint.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 08, 2026

Improper access control (CWE-284) in Fortinet FortiSOAR allows an authenticated low-privilege user to escalate their privileges within the platform via an undisclosed attack vector. Both PaaS and on-premise deployments across FortiSOAR versions 7.3 through 7.6.6 are affected. No public exploit or CISA KEV listing is present at time of analysis; the Fortinet PSIRT advisory FG-IR-26-164 is the sole authoritative source.

RemediationAI

Consult the Fortinet PSIRT advisory FG-IR-26-164 at https://fortiguard.fortinet.com/psirt/FG-IR-26-164 for patch guidance; the advisory references the fix but exact patched version numbers are not enumerated in the currently available data - verify with Fortinet directly whether upgrading to the latest 7.6.x or 7.5.x release resolves the issue. As an interim compensating control, restrict network access to the FortiSOAR management interface to trusted administrator IP ranges only, reducing the attack surface to users with legitimate network-level access. Apply the principle of least privilege to all FortiSOAR user accounts, auditing role assignments to minimise the number of accounts that could exercise the escalation path. Review FortiSOAR audit logs for anomalous role-boundary access patterns as a detection measure.

Affected VersionsENISA

FortiSOAR on-premise 7.5.0 ≤7.5.3
FortiSOAR on-premise 7.6.0 ≤7.6.6
FortiSOAR on-premise 7.3.0 ≤7.3.3
FortiSOAR on-premise 7.4.0 ≤7.4.5
FortiSOAR PaaS 7.3.0 ≤7.3.3
FortiSOAR PaaS 7.4.0 ≤7.4.5
FortiSOAR PaaS 7.6.0 ≤7.6.6
FortiSOAR PaaS 7.5.0 ≤7.5.3

Affected Packages

euvd fortisoar_on_premise no fix
euvd fortisoar_paas no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in euvd

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

Technical ContextAI · show details

FortiSOAR is Fortinet's Security Orchestration, Automation, and Response (SOAR) platform, available as both a cloud-hosted PaaS offering and a self-managed on-premise appliance. CWE-284 (Improper Access Control) indicates that the platform fails to correctly enforce authorization boundaries when an authenticated user invokes certain functionality, permitting access or actions beyond what their assigned role should allow. The vulnerability spans two distinct CPE entries - cpe:2.3:a:fortinet:fortisoar_on-premise and cpe:2.3:a:fortinet:fortisoar_paas - confirming the flaw is present in both deployment models across the same major version range (7.3-7.6). The specific vulnerable endpoint, API call, or feature within FortiSOAR is not disclosed in the current advisory text, which contains a literal unfilled template placeholder ('via <insert attack vector here>') in place of the attack vector description.

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Severity by source

Vendor (fortinet) PRIMARY 5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
vuln.today AI 5.4 MEDIUM

Vendor vector accepted as consistent with authenticated low-privilege network escalation yielding partial C/I impact and no availability effect.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (fortinet).

CVSS VectorVendor: fortinet

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

Lifecycle Timeline

2
CVSS changed
Sep 08, 2026 - 17:22 NVD
4.9 (MEDIUM) 5.4 (MEDIUM)
CVE Published
Sep 08, 2026 - 16:41 cve.org
MEDIUM 5.4

DescriptionCVE.org

A improper access control vulnerability in Fortinet FortiSOAR PaaS 7.6.0 through 7.6.6, FortiSOAR PaaS 7.5.0 through 7.5.3, FortiSOAR PaaS 7.4 all versions, FortiSOAR PaaS 7.3 all versions, FortiSOAR on-premise 7.6.0 through 7.6.6, FortiSOAR on-premise 7.5.0 through 7.5.3, FortiSOAR on-premise 7.4 all versions, FortiSOAR on-premise 7.3 all versions may allow attacker to escalation of privilege via <insert attack vector here>

Threat Intelligence Overview

EPSS Score
0.1%
Top 97% exploitable
Prevalence
Medium
enterprise SOAR platform used by mid-to-large SOC teams
Data Quality
5 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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +27
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.

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