CVE-2026-55732

HighCVSS 8.7/10Last modified Jul 27, 2026

Description

Out-of-bounds Read (CWE-125) in BACnet packet parsing (`bacdt_datetime_to_tod`) in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.18 on LINX-A64 allows an unauthenticated remote attacker to crash `linx_a64.exe` and ultimately reboot the device via a malformed BACnet TimeSynchronization or UTC-TimeSynchronization packet with an invalid month value. The same vulnerability affects multiple other Loytec products.

Metrics

CVSS 4.0 8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
Loytec	LIP-ME20xC	<= 8.4.18
Loytec	L-INX	<= 8.4.18
Loytec	L-GATE	<= 8.4.18
Loytec	L-ROC	<= 8.4.18
Loytec	L-IOB	<= 8.4.18
Loytec	L-DALI	<= 8.4.18
Loytec	L-VIS	<= 8.4.18
Loytec	L-PAD	<= 8.4.18

References

https://www.loytec.com/support/product-security/advisories/8532-dibt-cve-20260608-0001-bacnet-crash-due-to-invalid-timesync-message-high

Timeline

Published: Jul 24, 2026
Last modified: Jul 27, 2026
NVD status: Deferred

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