CVE-2026-67872

high

Description

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

References

https://gitlab.com/systerel/S2OPC/-/work_items/1788

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/tests/ClientServer/validation_tests/server/toolkit_test_server.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/src/ClientServer/services/bgenc/subscription_core.c

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/services/b2c/monitored_item_notification_queue_bs.c

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-53680

Details

Source: Mitre, NVD

Published: 2026-08-06

Updated: 2026-10-24

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00505