CVE-2026-39042 | MikroTik RouterOS up to 7.21.3/7.22.1 Unflattener libumsg.so unflatten denial of service

A vulnerability, which was classified as critical, has been found in MikroTik RouterOS up to 7.21.3/7.22.1. This vulnerability affects the function unflatten of the file libumsg.so of the component Unflattener. Performing a manipulation results in denial of service.

This vulnerability was named CVE-2026-39042. The attack may be initiated remotely. There is no available exploit.VulDB Recent EntriesRead More