CVE-2026-67871

S2OPC 1.7.3 - Remote Denial of Service via AddNodes Service 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 AddNodes, address_space_bs.c, sopc_node_mgt_helper_internal.c, and toolkit_test_server

References (4)

Core 4

Core References

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/tests/ClientServer/CMakeLists.txt

View Writeup ZIP pw:eip

https://gitlab.com/systerel/S2OPC/-/work_items/1787

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

View Writeup ZIP pw:eip

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

View Writeup ZIP pw:eip

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