CVE-2026-18790

Low

Description

A weakness has been identified in Systerel S2OPC up to 1.7.3. This affects the function LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse of the file src/ClientServer/frontend/client_wrapper/internal/state_machine.c of the component DeleteMonitoredItemsRequest Handler. This manipulation causes out-of-bounds read. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

SeverityLow

CVSS3.3

Exploit probability—

ProductSysterel S2opc

PublishedAug 4, 2026

First seenAug 4, 2026

Weakness typeCWE-125Out-of-bounds read CWE-119Memory buffer bounds error

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
systerel s2opc	1.7.0, 1.7.1, 1.7.2, 1.7.3	—

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