bacnet-stack BACnet Stack up to 1.4.4/1.5.0/1.5.x Address Resolution bsc-node.c bsc_node_parse_urls out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.22+

Summaryinfo

A vulnerability identified as critical has been detected in bacnet-stack BACnet Stack up to 1.4.4/1.5.0/1.5.x. This affects the function bsc_node_parse_urls of the file src/bacnet/datalink/bsc/bsc-node.c of the component Address Resolution. The manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2026-52788. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in bacnet-stack BACnet Stack up to 1.4.4/1.5.0/1.5.x. This issue affects the function bsc_node_parse_urls of the file src/bacnet/datalink/bsc/bsc-node.c of the component Address Resolution. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

BACnet Stack is a BACnet open source protocol stack C library for embedded systems. Prior to versions 1.4.5, 1.5.1, and 1.6.0, the bsc_node_parse_urls() function in src/bacnet/datalink/bsc/bsc-node.c contains three distinct bugs when parsing space-separated WebSocket URIs from a BACnet/SC Address Resolution ACK message. Two bugs cause out-of-bounds writes past the utf8_urls[10][129] array in the static BSC_ADDRESS_RESOLUTION structure. This issue has been patched in versions 1.4.5, 1.5.1, and 1.6.0.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-52788 since 06/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.4.5, 1.5.1 or 1.6.0 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: BACnet Stack 1.4.5/1.5.1/1.6.0

Timelineinfo

06/08/2026 CVE reserved
11/13/2026 +158 days Advisory disclosed
11/13/2026 +0 days VulDB entry created
11/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CNA: GitHub_M
CVE: CVE-2026-52788 (🔒)

GCVE (CVE): GCVE-0-2026-52788
GCVE (VulDB): GCVE-100-437159

Entryinfo

Created: 11/13/2026 17:16
Changes: 11/13/2026 17:16 (69)
Complete: 🔍
Cache ID: 216::103

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