CVE-2026-66364 MZ Automation libiec61850 Out-of-bounds Read

The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated Layer 2 multicast frame on the process bus. When processing specific payload fields, an attacker controlled inner element length may exceed its enclosing length, causing the parser to over...

CVE-2026-66364 MZ Automation libiec61850 Out-of-bounds Read

The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated Layer 2 multicast frame on the process bus. When processing specific payload fields, an attacker controlled inner element length may exceed its enclosing length, causing the parser to over...

CVE-2026-66364

The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated Layer 2 multicast frame on the process bus. When processing specific payload fields, an attacker controlled inner element length may exceed its enclosing length, causing the parser to over...

PT-2026-66633

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description The GOOSE parser contains an off-by-one boundary-handling flaw triggered by a single unauthenticated Layer-2 multicast frame on the process bus. When specific...

CVE-2026-66369: Out-of-bounds Read

The GOOSE parser contains an off-by-one boundary-handling flaw that can be triggered by a single unauthenticated Layer-2 multicast frame on the process bus. When specific GOOSE message fields are processed, the parser advances its internal buffer position incorrectly, resulting in a heap...

CVE-2026-66720: Out-of-bounds Read

The GOOSE subscriber component improperly validates the UTC timestamp field in unauthenticated IEC 61850 GOOSE EtherType 0x88B8 Layer-2 multicast messages. A specially crafted GOOSE frame containing an undersized timestamp field can trigger a heap out-of-bounds read during message processing,...

CVE-2026-66364: Out-of-bounds Read

The GOOSE payload parser contains a boundary handling flaw that can be triggered by a single unauthenticated Layer 2 multicast frame on the process bus. When processing specific payload fields, an attacker controlled inner element length may exceed its enclosing length, causing the parser to over...

PT-2026-66627

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description A boundary handling flaw exists in the GOOSE payload parser. An unauthenticated attacker can trigger this issue by sending a single Layer 2 multicast frame on th...

PT-2026-66634

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description The GOOSE subscriber component fails to properly validate the UTC timestamp field in unauthenticated IEC 61850 GOOSE EtherType 0x88B8 Layer-2 multicast messages...

Exploit for CVE-2026-52134

CVE-2026-52134: GOOSE replay and message-freshness handling in...

OSV-2026-1083 Heap-buffer-overflow in parseGoosePayload

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=539005080 Crash type: Heap-buffer-overflow READ 1 Crash state: parseGoosePayload parseGooseMessage fuzzgoosesubscriber.c...

CVE-2026-50103

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value...

CVE-2026-50103

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value...

CVE-2026-50103 Improper Handling of Syntactically Invalid Structure in MZ Automation libIEC61850

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value...

CVE-2026-50103

CVE-2026-50103 affects the GOOSE/R-GOOSE parser in libIEC61850 (MZ Automation) and describes a NULL dereference when parsing malformed TLV values, enabling a network-adjacent DoS by crashing the subscriber. The related PoCs and analysis in the connected documents confirm the issue and indicate fi...

CVE-2026-50103 Improper Handling of Syntactically Invalid Structure in MZ Automation libIEC61850

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value...

EUVD-2026-48396

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value...

libiec-security-poc

libIEC61850 v1.6.1 — MMS/GOOSE vulnerability PoCs Proof-of-co...

PT-2026-64177

Name of the Vulnerable Software and Affected Versions MZ Automation libIEC61850 affected versions not specified Description A NULL pointer dereference occurs in the L2 GOOSE and R-GOOSE shared parser. This issue allows a network-adjacent attacker to crash a subscribing application by sending a...

CVE-2026-50103: Improper Handling of Syntactically Invalid Structure

A NULL pointer dereference in the L2 GOOSE and R-GOOSE shared parser, which may allow a network-adjacent attacker to crash a subscribing application by sending a crafted GOOSE frame containing a malformed TLV value...