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CVE-2026-15340

Description

A flaw was found in lwIP. The Simple Mail Transfer Protocol (SMTP) client does not properly validate the size of inputs, leading to a buffer overflow. A malicious SMTP server could use this flaw to crash or possibly execute arbitrary code with the privileges of the SMTP client by sending an excessively long SMTP protocol AUTH message.

Statement

Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.

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