CVE-2025-36039
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIBM Aspera Faspex 5.0.0 through 5.0.12.1 could allow an authenticated user to perform unauthorized actions due to client-side enforcement of sever side security mechanisms,
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceIBM Aspera Faspex versions 5.0.0 through 5.0.12.1 contains a security vulnerability where the client application enforces security mechanisms that should be enforced server-side. This allows authenticated users to bypass authorization controls and perform actions they should not be permitted to perform, likely through manipulated client-side requests or direct object references.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 5.0.0, <= 5.0.12.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify IBM Aspera Faspex installationLocate the Faspex installation directory or check system services for Aspera Faspex processes. Common locations include /opt/aspera/faspex or C:\Program Files\Aspera\Faspex. Check for a version file or use system package management tools to query the installed package.Affected if IBM Aspera Faspex is found installed on the system
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Determine the installed version numberRead the version file in the installation directory, use the Faspex command-line interface if available (such as 'faspex --version' or looking in admin panels), or query the application through its web interface which typically displays version information in the footer or about page.Affected if The version is 5.0.0 through 5.0.12.1 inclusive
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Verify the application is running and accessibleCheck if the Faspex web service or daemon is active and responding. Attempt to access the login page or API endpoint to confirm the application is operational.Affected if The application is running and accessible to users who can authenticate
A user is affected if IBM Aspera Faspex version 5.0.0 through 5.0.12.1 is installed and the application is running, allowing authenticated users to potentially exploit client-side validation bypass.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedImplement proper server-side authorization checks for all sensitive operations. Move security validation logic from client to server and verify user permissions before executing any action, regardless of client-supplied parameters.
IBM Aspera Faspex 5.0.13 or later
- Check the IBM Aspera Faspex downloads or support page for version 5.0.13 or later
- Download the latest available version of IBM Aspera Faspex
- Review the release notes for security updates related to CVE-2025-36039
- Plan maintenance window for the upgrade
- Back up current configuration and data
- Install the upgraded version following standard IBM Aspera upgrade procedures
- Verify the installation and test that the client-side enforcement vulnerability is remediated
- Confirm all user roles and permissions function correctly post-upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-36039 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-36039 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data