CVE-2026-67872

An issue in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the event monitored-item queue resize handling

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-25)

CWE

CWE-400

Published

2026-08-06

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

References

• https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/monitored_item_notification_queue_bs.c
• https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/bgenc/subscription_core.c
• https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/tests/ClientServer/validation_tests/client/toolkit_test_client_modify_event_queue.c
• https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/tests/ClientServer/validation_tests/server/toolkit_test_server.c
• https://gitlab.com/systerel/S2OPC/-/work_items/1788

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