CVE-2026-65421 MZ Automation libiec61850 Out-of-bounds Read

The MMS BER decoder contains a flaw in decoding fixed-width BER fields boolean/integer: an attacker-supplied length value is not validated, causing a read past the end of a heap buffer. This leads to termination of the MMS service process and a denial-of-service condition...

CVE-2026-65421

The MMS BER decoder contains a flaw in decoding fixed-width BER fields boolean/integer: an attacker-supplied length value is not validated, causing a read past the end of a heap buffer. This leads to termination of the MMS service process and a denial-of-service condition...

CVE-2026-65421

CVE-2026-65421 affects the MMS BER decoder in the MMS/IEC 61850 stack (as noted in NVD and CVE lists). The flaw is an attacker-supplied length for fixed-width BER fields (boolean/integer) that is not validated, causing a read past the end of a heap buffer. This results in termination of the MMS s...

PT-2026-66624

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description The MMS BER decoder contains a flaw when decoding fixed-width BER Basic Encoding Rules fields, specifically booleans and integers. The issue occurs because a...