CVE-2025-66487
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 Shares 1.9.9 through 1.11.0 does not properly rate limit the frequency that an authenticated user can send emails, which could result in email flooding or a denial of service.
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 · high confidenceIBM Aspera Shares versions 1.9.9 through 1.11.0 lack proper rate limiting on email dispatch for authenticated users, allowing any authenticated user to send unlimited emails and potentially flood inboxes or exhaust server resources.
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>= 1.9.9, < 1.11.1CVSS 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
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 Shares installationLocate the Aspera Shares installation directory or check for the aspera-shares service/process on the server.Affected if IBM Aspera Shares is not installed on the system.
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Determine installed versionCheck the installed version of Aspera Shares using the product's built-in version command, admin interface, or version file within the installation directory.Affected if The installed version is >= 1.9.9 and < 1.11.1.
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Verify email sending functionality is accessibleLog in as an authenticated (non-admin) user and attempt to access the email sending feature or check if the product allows users to send emails through the platform.Affected if Authenticated users can access and use the email sending functionality.
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Check for rate limiting configurationInspect Aspera Shares configuration files, admin settings, or application logs to determine if any rate limiting is configured for email dispatch.Affected if No rate limiting controls are configured or enforced on email sending.
A user is affected if they have IBM Aspera Shares version 1.9.9 through 1.11.0 installed with the email feature accessible to authenticated users and without rate limiting configured.
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 · scoped1.11.1
Implement rate limiting controls on the email sending functionality to restrict the number of emails an authenticated user can send within a given time window, and configure appropriate thresholds based on legitimate usage patterns.
IBM Aspera Shares 1.11.1
- Backup the current IBM Aspera Shares installation and all associated data
- Download IBM Aspera Shares version 1.11.1 from the official IBM Aspera download portal or IBM Fix Central
- Stop the Aspera Shares services before performing the upgrade
- Install version 1.11.1 following the standard IBM Aspera upgrade documentation
- Restart the Aspera Shares services after installation completes
- Verify the upgrade was successful by checking the version number in the admin interface
- Confirm that email rate limiting is now properly enforced by testing with an authenticated user
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-66487 — 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-2025-66487 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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