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Fortinet FortiPAM CVE-2025-49201

CRITICAL
Weak Authentication (CWE-1390)
2025-10-14 psirt@fortinet.com
9.8
CVSS 3.1 · NVD
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Attack ChainAIDerived

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

  1. Access
    Reach FortiPAM/FortiSwitchManager HTTP interface
  2. Delivery
    Send crafted HTTP request
  3. Exploit
    Bypass weak authentication check
  4. Execution
    Execute unauthorized code or commands
  5. Impact
    Full compromise of appliance

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Strong authentication
Exploitation Conditions

Exploitation requires network reachability to the HTTP/HTTPS management interface of an affected build: FortiPAM 1.0 through 1.5.0 (specifically 1.5.0, 1.4.0-1.4.2, and all 1.1/1.2/1.3 releases) or FortiSwitchManager 7.2.0 through 7.2.4. The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no authentication and no user interaction are needed once that interface is reachable, so the primary limiting factor is exposure: appliances whose management interface is restricted to trusted networks or not internet-facing substantially reduce real-world attack surface. The only hard prerequisites are a vulnerable version and HTTP access to the management service; no non-default feature toggle is named in the advisory description.

Impact

Multiple signals must be weighed together here and they partly conflict. The CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N, C:H/I:H/A:H) describes a worst-case profile: remote, network-reachable, no authentication, no user interaction, and full compromise of confidentiality, integrity, and availability - consistent with CWE-1390 (weak/improper authentication) allowing unauthorized code or command execution. Against that, the EPSS score is low at 0.58% (47th percentile), the CVE is NOT on the CISA KEV list, and no public proof-of-concept is referenced, so there is no public exploit identified at time of analysis and no evidence of active exploitation. This is the classic 'high-CVSS, not-yet-proven-exploited' pattern: the theoretical impact is severe and the vulnerability sits on internet-facing security-management appliances (a historically attractive Fortinet target class), but the current empirical exploitation probability is modest. The disparity between a 9.8 severity and a sub-1% EPSS suggests the bug is serious-by-design but not yet widely weaponized - treat it as a high patch priority given Fortinet's history of appliance exploitation, while noting that no active-exploitation or POC signal currently corroborates the high base score. No SSVC decision data was provided in the input, so automatable/exploitation-status cannot be independently derived beyond the above.

Exploit ScenarioDerived

An unauthenticated attacker with network access to a FortiPAM or FortiSwitchManager management interface sends specially crafted HTTP request(s) that abuse the weak authentication logic to bypass access controls and execute unauthorized code or commands on the appliance. Because CVSS shows AV:N/AC:L/PR:N/UI:N, no credentials, no user interaction, and only low attack complexity are required once the interface is reachable. No public proof-of-concept is referenced in the provided intelligence, so exploitation would currently require independent vulnerability research.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 18, 2026

Unauthenticated remote attackers can exploit weak authentication in Fortinet FortiPAM and FortiSwitchManager management interfaces to execute unauthorized code or commands via specially crafted HTTP requests. Affected builds include FortiPAM 1.0 through 1.5.0 (notably 1.5.0, 1.4.0-1.4.2, and all 1.1/1.2/1.3 releases) and FortiSwitchManager 7.2.0 through 7.2.4; the CVSS vector is network-reachable, low-complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact (9.8). No public exploit code or CISA KEV entry was identified at time of analysis, and EPSS is 0.58% (47th percentile), so observed risk is driven mainly by whether the management interface is exposed.

RemediationAI

Upgrade FortiPAM and FortiSwitchManager to a release identified as fixed in Fortinet PSIRT advisory FG-IR-25-010 (https://fortiguard.fortinet.com/psirt/FG-IR-25-010); the provided data does not include an exact fixed version number, so confirm the recommended upgrade path in the advisory before deployment. Until patched, reduce exposure by restricting the HTTP/HTTPS management interface to trusted management networks or a management VLAN, blocking direct internet access to the appliance, and requiring VPN or jump-host access for administrators; these controls reduce remote-admin convenience and require network changes but directly remove the unauthenticated network reachability the CVSS vector depends on. Where operationally possible, disable plain HTTP management access and permit only HTTPS from trusted sources, and monitor management-interface logs for anomalous or crafted HTTP requests as a detection backstop.

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Technical ContextAI · show details

The issue is classified as CWE-1390 (Weak Authentication) in Fortinet’s FortiPAM privileged access management appliance and FortiSwitchManager. The vulnerable HTTP/HTTPS management service accepts specially crafted requests that bypass or weaken authentication checks, allowing an unauthenticated network client to reach privileged functionality and execute unauthorized code or commands. CPE data identifies FortiPAM (including explicit 1.5.0 and wildcarded releases) and FortiSwitchManager as affected platforms. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N, no credentials or user interaction are required once the management interface is reachable; exposure is therefore the main real-world gate. The advisory does not name a non-default feature toggle as a prerequisite, so any vulnerable build with HTTP access to its management service should be considered in scope.

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Weak authentication lets a remote unauthenticated attacker run unauthorized commands via crafted HTTP (AV:N, PR:N, UI:N, AC:L), yielding full C/I/A compromise of the appliance (S:U).

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

Primary rating from NVD.

CVSS VectorNVD

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

DescriptionNVD

A weak authentication vulnerability in Fortinet FortiPAM 1.5.0, FortiPAM 1.4.0 through 1.4.2, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiSwitchManager 7.2.0 through 7.2.4 allows attacker to execute unauthorized code or commands via specially crafted http requests

Executive ViewAI

Why It Matters

Fortinet FortiPAM and FortiSwitchManager management interfaces contain a critical authentication weakness (CVE-2025-49201, CVSS 9.8) that allows unauthenticated remote attackers to execute arbitrary code or commands. Organizations using affected versions-FortiPAM 1.0-1.5.0 and FortiSwitchManager 7.2.0-7.2.4-face potential full compromise of confidentiality, integrity, and availability if the management interface is network-exposed. No public exploit was identified at time of analysis, but leadership should prioritize reducing exposure because no vendor-released patch is currently available.

Business Impact: High
Compensating Controls

Restrict management interface access to trusted networks via IP allowlisting, VPN, or network segmentation; disable or take offline internet-facing management interfaces where possible; monitor HTTP traffic for anomalous requests; enforce MFA and strong authentication where feasible; and apply any vendor-provided workarounds from Fortinet's advisory.

Threat Intelligence Overview

EPSS Score
0.6%
Top 53% exploitable
Prevalence
Medium
specific Fortinet management appliances, narrower deployment than FortiGate firewalls
Data Quality
3 sources
Confidence: Low

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 CRITICAL
CISA KEV No
Public POC No
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:fortinet:fortipam:*:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortipam:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiswitchmanager:*:*:*:*:*:*:*:*
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