Mz Automation Gmbh
Monthly
Heap buffer over-read in MZ Automation GmbH's libiec61850 (versions prior to 1.6.2) allows an unauthenticated adjacent-network attacker to crash the MMS service process by sending a crafted BER-encoded message with an invalid length value in a BOOLEAN or INTEGER field. The MMS BER decoder performs no bounds validation on the attacker-supplied length, causing a read past the end of a heap-allocated buffer and subsequent process termination. CISA ICS-CERT issued advisory ICSA-26-211-10 for this vulnerability; no public exploit code or KEV listing has been identified at time of analysis.
Denial-of-service in MZ Automation's libiec61850 (versions before 1.6.2) allows an unauthenticated attacker on the process bus to crash IEC 61850 subscriber processes with a single crafted GOOSE frame. The GOOSE payload parser mishandles nested length fields, so an inner element length that exceeds its enclosing length forces a one-byte out-of-bounds read (CWE-125) that reliably terminates the subscriber. No public exploit identified at time of analysis, and it is not listed in CISA KEV; the CISA ICS advisory (ICSA-26-211-10) and a vendor patch are available.
Remote unauthenticated denial of service in MZ Automation's libiec61850 (all versions before 1.6.2) allows an attacker to crash IEC 61850/MMS server processes by opening a crafted TCP/102 connection. The flaw sits in the ISO Presentation layer's normal-mode negotiation, where a missing length check on an attacker-controlled zero-length field triggers a bounded heap out-of-bounds read that terminates the process before any MMS session is even established. No public exploit identified at time of analysis and it is not on CISA KEV, but the pre-authentication network reach and low complexity make it a credible availability threat to exposed OT/ICS devices.
Denial-of-service in MZ Automation GmbH libiec61850 (all versions before 1.6.2) allows an adjacent unauthenticated attacker to crash the MMS server process by sending a crafted BER-encoded confirmed request PDU containing an extended BER tag over an established MMS session. The missing bounds check in the buffer decoder causes a one-byte heap out-of-bounds read, terminating the MMS service and disrupting IEC 61850-based industrial control communications. No active exploitation is confirmed (not listed in CISA KEV), and no public exploit code has been identified at time of analysis.
Out-of-bounds heap read in MZ Automation GmbH libiec61850 (all versions before 1.6.2) allows an unauthenticated adjacent-network attacker to crash an MMS server by sending a crafted AARQ PDU with a zero or one-byte length value in the calling AP title field during connection establishment. The ACSE parser fails to bounds-check the attacker-controlled length, reading past the end of a heap buffer and causing availability loss - a significant concern in IEC 61850 substation automation environments where device availability underpins grid protection and monitoring. No public exploit has been identified at time of analysis, and no CISA KEV listing exists; a vendor patch (version 1.6.2) is available per CISA ICS advisory ICSA-26-211-10.
Heap buffer over-read in MZ Automation GmbH's libiec61850 (versions prior to 1.6.2) allows an unauthenticated adjacent-network attacker to crash the MMS service process by sending a crafted BER-encoded message with an invalid length value in a BOOLEAN or INTEGER field. The MMS BER decoder performs no bounds validation on the attacker-supplied length, causing a read past the end of a heap-allocated buffer and subsequent process termination. CISA ICS-CERT issued advisory ICSA-26-211-10 for this vulnerability; no public exploit code or KEV listing has been identified at time of analysis.
Denial-of-service in MZ Automation's libiec61850 (versions before 1.6.2) allows an unauthenticated attacker on the process bus to crash IEC 61850 subscriber processes with a single crafted GOOSE frame. The GOOSE payload parser mishandles nested length fields, so an inner element length that exceeds its enclosing length forces a one-byte out-of-bounds read (CWE-125) that reliably terminates the subscriber. No public exploit identified at time of analysis, and it is not listed in CISA KEV; the CISA ICS advisory (ICSA-26-211-10) and a vendor patch are available.
Remote unauthenticated denial of service in MZ Automation's libiec61850 (all versions before 1.6.2) allows an attacker to crash IEC 61850/MMS server processes by opening a crafted TCP/102 connection. The flaw sits in the ISO Presentation layer's normal-mode negotiation, where a missing length check on an attacker-controlled zero-length field triggers a bounded heap out-of-bounds read that terminates the process before any MMS session is even established. No public exploit identified at time of analysis and it is not on CISA KEV, but the pre-authentication network reach and low complexity make it a credible availability threat to exposed OT/ICS devices.
Denial-of-service in MZ Automation GmbH libiec61850 (all versions before 1.6.2) allows an adjacent unauthenticated attacker to crash the MMS server process by sending a crafted BER-encoded confirmed request PDU containing an extended BER tag over an established MMS session. The missing bounds check in the buffer decoder causes a one-byte heap out-of-bounds read, terminating the MMS service and disrupting IEC 61850-based industrial control communications. No active exploitation is confirmed (not listed in CISA KEV), and no public exploit code has been identified at time of analysis.
Out-of-bounds heap read in MZ Automation GmbH libiec61850 (all versions before 1.6.2) allows an unauthenticated adjacent-network attacker to crash an MMS server by sending a crafted AARQ PDU with a zero or one-byte length value in the calling AP title field during connection establishment. The ACSE parser fails to bounds-check the attacker-controlled length, reading past the end of a heap buffer and causing availability loss - a significant concern in IEC 61850 substation automation environments where device availability underpins grid protection and monitoring. No public exploit has been identified at time of analysis, and no CISA KEV listing exists; a vendor patch (version 1.6.2) is available per CISA ICS advisory ICSA-26-211-10.