CVE-2026-67865

S2OPC 1.7.3 - Denial of Service via Out-of-Bounds Read in RepublishResponse Handling

Title source: llm

Description

S2OPC 1.7.3 contains an out-of-bounds read in RepublishResponse handling. This allows a remote attacker to cause a denial of service

References (5)

Core 5

Core References

https://gitlab.com/systerel/S2OPC/-/work_items/1785

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

View Writeup ZIP pw:eip

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

View Writeup ZIP pw:eip

https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/Common/opcua_types/sopc_encoder.c

View Writeup ZIP pw:eip

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

View Writeup ZIP pw:eip

Scores

EPSS 0.0025

EPSS Percentile 16.3%

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

Status published

Published Aug 05, 2026

Tracked Since Aug 06, 2026