CVE-2025-66624

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Source

https://cve.org/CVERecord?id=CVE-2025-66624

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66624.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-66624

Aliases

GHSA-8wgw-5h6x-qgqg

Published

2025-12-05T18:36:26.280Z

Modified

2026-07-15T02:16:29.093483856Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

BACnet-stack MS/TP reply matcher OOB read

Details

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 npduisexpectedreply function in src/bacnet/npdu.c indexes requestpdu[offset+2/3/5] and replypdu[offset+1/2/4] without verifying that those APDU bytes exist. bacnetnpdu_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.

Database specific

{
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66624.json",
    "cna_assigner": "GitHub_M",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "1.5.0.rc2"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/bacnet-stack/bacnet-stack

Affected ranges

Type

GIT

Repo

https://github.com/bacnet-stack/bacnet-stack

Events

Introduced

Fixed

9378f7d1e70169ebde4a5090bae7603703eadf48

Database specific

{
    "source": "REFERENCES"
}

Affected versions

bacnet-stack-1.*

bacnet-stack-1.0.0

bacnet-stack-1.1.1

bacnet-stack-1.2.0

bacnet-stack-1.3.0

bacnet-stack-1.3.1

bacnet-stack-1.3.2

bacnet-stack-1.3.3

bacnet-stack-1.3.4

bacnet-stack-1.3.5

bacnet-stack-1.3.6

bacnet-stack-1.3.7

bacnet-stack-1.3.8

bacnet-stack-1.4.0

bacnet-stack-1.4.1

bacnet-stack-1.4.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66624.json"