CVE-2026-67868CWE-122

CVE-2026-67868

Critical · published August 18, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
64.4
In the wild
Unconfirmed
What it is

A heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateMonitoredItems processing. This allows a remote attacker to execute arbitrary code.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01063 · 64.4th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-08-18T02:17Z
References (6)
https://github.com/gff-cw/information/issues/16 · [email protected]https://github.com/systerel/S2OPC/blob/b4c5c7d63cd69698461d514b905a7c92b3c377c4/src/ClientServer/services/b2c/monitored_item_event_filter_treatment_bs.c · [email protected]https://github.com/systerel/S2OPC/blob/b4c5c7d63cd69698461d514b905a7c92b3c377c4/src/ClientServer/services/b2c/monitored_item_event_filter_where_clause_bs.c · [email protected]https://github.com/systerel/S2OPC/tree/S2OPC_Toolkit_1.7.3/samples/ClientServer/demo_server_alarms · [email protected]https://gitlab.com/systerel/S2OPC/-/work_items/1779 · [email protected]https://github.com/gff-cw/information/issues/16 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 AUG 00:00Z
    A heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateMonitoredItems processing
    cvelistv5