Buffer overflow in Systerel S2opc
CVE-2026-82618
A vulnerability was determined in Systerel S2OPC up to 1.7.3. The affected element is the function set_range_matrix_on_string_array of the file src/Common/opcua_types/sopc_builtintypes.c of the component String Array Range Writing. This manipulation causes out-of-bounds read. The attack is possible to be carried out remotely. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Systerel S2opc — versions 1.7.0, 1.7.1, 1.7.2
Weakness classification (CWE)
References
- gitlab.com/systerel/S2OPC/-/work_items/1796 (related)
- vuldb.com/cve/CVE-2026-82618 (third-party-advisory)
- vuldb.com/submit/893095 (third-party-advisory)
- vuldb.com/vuln/397118 (technical-description, vdb-entry)
- vuldb.com/vuln/397118/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-82618?
- CVE-2026-82618 is a medium-severity vulnerability in Systerel S2opc, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.3/10. Published 2026-08-31.
- How severe is CVE-2026-82618?
- Medium severity. CVSS v3 base score is 4.3 out of 10.