Medium severity6.5NVD Advisory· Published Jul 30, 2026· Updated Sep 3, 2026
CVE-2026-65421
CVE-2026-65421
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
2News mentions
2- MZ Automation GmbH: Eight Libiec61850 Vulnerabilities Disclosed Together, Causing DoSVypr Intelligence · Jul 30, 2026
- MZ Automation GmbH libiec61850CISA ICS Advisories