Out-of-bounds Read Vulnerability in Loytec BACnet Products
CVE-2026-55732

8.7HIGH

Key Information:

Vendor

Loytec

Status
Lip-me20xc
L-inx
L-gate
L-roc
Vendor
CVE Published:
24 July 2026

What is CVE-2026-55732?

An out-of-bounds read vulnerability exists in Loytec BACnet devices due to improper handling of malformed TimeSynchronization packets. This flaw allows a remote unauthenticated attacker to crash the affected system process, leading to a potential device reboot and service disruption. Affected products include LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS, and L-PAD. Users are advised to implement necessary patches and monitor their systems for unusual activity.

Affected Version(s)

L-DALI 0 <= 8.4.18

L-GATE 0 <= 8.4.18

L-INX 0 <= 8.4.18

References

https://www.loytec.com/support/product-security/advisorie...
vendor-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Daniel Hulliger, armasuisse CYD Campus
Damian Pfammatter, armasuisse CYD Campus
.