Out-of-bounds read in IPv6 subsystem in Intel(R) AMT and Intel(R) ISM versions before 14.0.33 may allow an unauthenticated user to potentially enable denial of service via network access.
https://www.synology.com/security/advisory/Synology_SA_20_15
https://www.kb.cert.org/vuls/id/257161
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html