CVE-2025-66487
Received Received - Intake

Rate Limiting Bypass in IBM Aspera Shares Causes Email Flooding

Publication date: 2026-04-01

Last updated on: 2026-04-03

Assigner: IBM Corporation

Description
IBM 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.

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Meta Information

Published
2026-04-01
Last Modified
2026-04-03
Generated
2026-07-06
AI Q&A
2026-04-02
EPSS Evaluated
2026-07-05
NVD
CVE-2025-66487
EUVD
EUVD-2025-209186

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ibm aspera_shares From 1.9.9 (inc) to 1.11.1 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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Executive Summary

IBM Aspera Shares versions 1.9.9 through 1.11.0 have a vulnerability where the system does not properly limit how often an authenticated user can send emails.

Because of this, a user could send a large number of emails in a short period, potentially overwhelming the email system.

Impact Analysis

This vulnerability could lead to email flooding, where the email system is overwhelmed by a high volume of emails sent by an authenticated user.

Such flooding could cause a denial of service, making the email functionality unavailable or degraded for legitimate users.

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