CVE-2026-62641
Description
A flaw was found in Roundcube Webmail. The TNEF (Transport Neutral Encapsulation Format) decoder, which handles winmail.dat files, is vulnerable to a denial of service. A remote attacker could send a specially crafted compressed-RTF (Rich Text Format) file, causing the decoder to consume excessive resources and become unavailable. This can lead to a disruption of service for users of the webmail application.
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.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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