CVE-2026-55731

Loytec LINX firmware: Unchecked input for loop condition in the SNMP agent

State: Published
Severity: 6.6 Medium
Published: Jul 24, 2026
Updated: Jul 24, 2026
Reserved: Jun 17, 2026

Description

Unchecked input for loop condition (CWE-606) in the SNMP agent in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows an unauthenticated remote attacker to cause persistent denial of service (CPU exhaustion) via a crafted SNMP GETNEXT request with a large OID component.

Scores

CVSS	Score	Vector	Source
4.0	6.6 Medium	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:U	NCSC.ch

Weaknesses

CWE-606 Unchecked input for loop condition

Affected Products

Product	Versions
LIP-ME20xCLoytec	8.4.16 and earlierAffected
L-INXLoytec	8.4.16 and earlierAffected
L-GATELoytec	8.4.16 and earlierAffected
L-ROCLoytec	8.4.16 and earlierAffected
L-IOBLoytec	8.4.16 and earlierAffected
L-DALILoytec	8.4.16 and earlierAffected
L-VISLoytec	8.4.16 and earlierAffected
L-PADLoytec	8.4.16 and earlierAffected

References

https://www.loytec.com/support/product-security/advisories/8531-dibt-cve-20260601-0003-unchecked-input-for-loop-condition-cwe-606-in-the-snmp-agent-mediumvendor-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.