CVE Watch12 de nov. de 2026

CVE-2026-46677

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.4 and 1.5.1, there is a client-sid

CVSS

6.5

Média

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 12 de nov. de 2026 · Última mod.: 12 de nov. de 2026 · CWE-125 · CWE-130

EPSS · 30d

Ainda não há histórico EPSS suficiente.

Descrição técnica

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.4 and 1.5.1, there is a client-side out-of-bounds read in the AtomicReadFile-ACK record-access handling path. The issue is caused by a mismatch between a remote returnedRecordCount value and the fixed local fileData[] array capacity in BACNET_ATOMIC_READ_FILE_DATA. The ACK decode path preserves the remote RecordCount, discards storage for excess records without truncating that count, and a downstream sink later iterates over the original RecordCount and indexes fileData[i] out of bounds. This issue has been patched in versions 1.4.4 and 1.5.1.

Referências oficiais

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