CVE-2026-5503 | wolfSSL up to 5.9.0 ClientHello TLSX_EchChangeSNI out-of-bounds write
A vulnerability was found in wolfSSL up to 5.9.0. It has been rated as critical. Impacted is the function TLSX_EchChangeSNI of the component ClientHello Handler. This manipulation causes out-of-bounds write.
This vulnerability appears as CVE-2026-5503. The attack may be initiated remotely. There is no available exploit.
It is suggested to install a patch to address this issue.