CVE-2026-4026Network attack vector

Administrator escalation via unchecked role-change API request

Published Jun 19, 2026 · Updated Jun 19, 2026

Improper access control in Flexera FlexNet Manager Suite 2025 R1 allows remote authenticated users to escalate to Administrator. During an account-settings save, the 2025 R1 backend accepts an intercepted and modified API request that changes the caller's role without verifying write authorization. Read access through the "Configure operators of FlexNet Manager Platform" permission is sufficient, and successful exploitation grants full control of the web application.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Flexera FlexNet Manager Suite 2025 R1 allows remote authenticated users to escalate to Administrator. During an account-settings save, the 2025 R1 backend accepts an intercepted and modified API request that changes the caller's role without verifying write authorization. Read access through the "Configure operators of FlexNet Manager Platform" permission is sufficient, and successful exploitation grants full control of the web application.

The record

CVE
CVE-2026-4026
Published
Jun 19, 2026
Updated
Jun 19, 2026
Vendor
Revenera
Product
FlexNet Manager Suite
Classifications
CWE-284, CAPEC-233, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2025 R1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Revenera · FlexNet Manager Suiteversion=2025 R1

Published CVSS scores

8.7Flexera Software LLCCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CAPEC-233Privilege Escalation
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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