CVE-2026-67868

Heap-based Out-of-Bounds Write in S2OPC Server Event Filter

Published Aug 17, 2026 CVSS 3.1 · 9.8 Critical EPSS 1.1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Heap-based Out-of-Bounds Write in S2OPC Server Event Filter
Type Values Removed Values Added
Title Heap Out‑of‑Bounds Write in S2OPC Server EventFilter Enables Remote Code Execution
Weaknesses CWE-787
Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Heap Out‑of‑Bounds Write in S2OPC Server EventFilter Enables Remote Code Execution
Weaknesses CWE-787
Type Values Removed Values Added
First Time appeared Systerel
Systerel s2opc
Vendors & Products Systerel
Systerel s2opc
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 18, 2026, 3:42 PM
Reserved
Jul 30, 2026, 12:00 AM
Status
Deferred
Published
Aug 17, 2026, 10:17 PM
Modified
Sep 9, 2026, 4:04 PM