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CVE-2026-55731

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

MEDIUM
6.6
CVSS Score
Published: July 24, 2026 at 02:00 PM UTC
Updated: July 27, 2026 at 08:44 PM UTC
8 products affected across 1 vendorL-IOBL-PADL-GATE

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Severity
MEDIUM6.6
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

L-DALI· Loytec
60%
v ≤ 8.4.16
L-GATE· Loytec
60%
v ≤ 8.4.16
L-INX· Loytec
60%
v ≤ 8.4.16
L-IOB· Loytec
60%
v ≤ 8.4.16
L-PAD· Loytec
60%
v ≤ 8.4.16
L-ROC· Loytec
60%
v ≤ 8.4.16
L-VIS· Loytec
60%
v ≤ 8.4.16
LIP-ME20xC· Loytec
60%
v ≤ 8.4.16

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.6MEDIUMNCSC.ch
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-606

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