CVE-2026-5778 | wolfSSL up to 5.9.0 Authentication Tag ssl_DecodePacket integer underflow

A vulnerability classified as problematic was found in wolfSSL up to 5.9.0. Affected is the function ssl_DecodePacket of the component Authentication Tag Handler. Such manipulation leads to integer underflow.

This vulnerability is uniquely identified as CVE-2026-5778. The attack can be launched remotely. No exploit exists.

A patch should be applied to remediate this issue.