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FlexNet Manager Suite EUVDEUVD-2026-38010

| CVE-2026-4026 HIGH
Improper Access Control (CWE-284)
2026-06-19 flexera GHSA-rjpc-35cg-xm5c
Authentication Bypass Flexnet Manager Suite
8.7
CVSS 4.0 · Vendor: flexera
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Severity by source

Vendor (flexera) PRIMARY
8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.8 HIGH

Network-reachable web app, no user interaction, but requires an authenticated read-only account (PR:L); full compromise of FNMS app yields C/I/A:H with no scope change.

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

Primary rating from Vendor (flexera).

CVSS VectorVendor: flexera

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Jun 19, 2026 - 14:15 vuln.today

DescriptionCVE.org

A security vulnerability has been identified in FlexNet Manager Suite 2025 R1 that could allow an authenticated user with read-only access to account settings to escalate their privileges to Administrator level.

AnalysisAI

Privilege escalation in Flexera FlexNet Manager Suite 2025 R1 allows an authenticated user holding only read-only access to account settings to elevate themselves to full Administrator. The flaw is a server-side access-control failure (CWE-284) reachable over the network with low privileges and no user interaction, scoring CVSS 4.0 8.7. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain read-only FNMS account
Delivery
Authenticate to FNMS web UI
Exploit
Invoke account-settings admin endpoint
Execution
Bypass server-side role check
Persist
Promote own user to Administrator
Impact
Abuse SAM control plane and exfiltrate data
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Vulnerability AssessmentAI

Exploitation The attacker must already hold a valid FNMS 2025 R1 user account that has been granted read-only access to account settings - this specific role is the entry point named in the description. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Signals point to a real but bounded enterprise risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A contractor or junior SAM analyst who has been granted read-only visibility into FlexNet account settings authenticates to the FNMS web UI and issues a crafted request to the account-settings administrative endpoint that lacks a server-side role check. The server processes the request as if the caller were an Administrator, promoting the attacker's own account, after which they reconfigure SAM integrations, suppress license-noncompliance findings, or exfiltrate entitlement data. …
Remediation Patch available per vendor advisory - consult Flexera's notice at https://community.flexera.com/s/feed/0D5PL00000rJX5K0AW for the fixed FNMS 2025 R1 build and apply it on the FNMS application server following standard change control. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Audit all Flexera FlexNet Manager Suite 2025 R1 deployments in your environment; identify and document all read-only account holders; enable comprehensive audit logging for account privilege and permission changes. …

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EUVD-2026-38010 vulnerability details – vuln.today
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