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.
Metrics
Affected Vendors & Products
References
History
Fri, 31 Jul 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 31 Jul 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mz-automation
Mz-automation libiec61850 |
|
| Vendors & Products |
Mz-automation
Mz-automation libiec61850 |
Thu, 30 Jul 2026 22:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | MZ Automation libiec61850 Out-of-bounds Read | |
| Weaknesses | CWE-125 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: icscert
Published: 2026-07-30T22:35:14.668Z
Updated: 2026-07-31T15:55:36.578Z
Reserved: 2026-07-27T19:32:49.396Z
Link: CVE-2026-65421
Updated: 2026-07-31T15:55:31.946Z
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