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CVE-2026-18790mediumCWE-119CWE-125

Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds

33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 4.8epss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
Systerel · S2OPC
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.