CVE-2026-55732

HIGH

Loytec LINX firmware: Out-of-bounds Read in BACnet packet parsing (bacdt_datetime_to_tod)

Title source: cna

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

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

Scores

CVSS v4 8.7

EPSS 0.0032

EPSS Percentile 24.6%

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-125

Status published

Products (8)

Loytec/L-DALI < 8.4.18

Loytec/L-GATE < 8.4.18

Loytec/L-INX < 8.4.18

Loytec/L-IOB < 8.4.18

Loytec/L-PAD < 8.4.18

Loytec/L-ROC < 8.4.18

Loytec/L-VIS < 8.4.18

Loytec/LIP-ME20xC < 8.4.18

Published Jul 24, 2026

Tracked Since Jul 24, 2026