CVE-2026-67867

Systerel S2OPC 1.7.3 - Denial of Service via Alarm/Conditions PublishResponse EventNotificationList Buffer Overflow

Title source: llm

Description

Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data

References (5)

Core 5

Core References

https://github.com/gff-cw/information/issues/18

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/frontend/client_wrapper/alarm_conditions/libs2opc_client_alarm_conditions.c

View Writeup ZIP pw:eip

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/frontend/client_wrapper/internal/state_machine.c

View Writeup ZIP pw:eip

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/address_space/sopc_event_manager.c

View Writeup ZIP pw:eip

https://gitlab.com/systerel/S2OPC/-/work_items/1781

Scores

EPSS 0.0027

EPSS Percentile 19.6%

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

Status published

Published Aug 05, 2026

Tracked Since Aug 06, 2026