Description
BACnet Protocol Stack library provides a BACnet application layer, network layer and media access (MAC) layer communications services. Prior to 1.5.0.rc2, The npdu_is_expected_reply function in src/bacnet/npdu.c indexes request_pdu[offset+2/3/5] and reply_pdu[offset+1/2/4] without verifying that those APDU bytes exist. bacnet_npdu_decode() can return offset == 2 for a 2-byte NPDU, so tiny PDUs pass the version check and then get read out of bounds. On ASan/MPU/strict builds this is an immediate crash (DoS). On unprotected builds it is undefined behavior and can mis-route replies; RCE is unlikely because only reads occur, but DoS is reliable.
INFO
Published Date :
2025-12-05T18:36:26.280Z
Last Modified :
2025-12-08T17:28:39.912Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2025-66624 vulnerability.
| Vendors | Products |
|---|---|
| Bacnetstack |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-66624.
