CVE-2026-78049

LOW 3.7

Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability has been found in Systerel S2OPC up to 1.7.3. Impacted is the function SOPC_NodeMgtHelperInternal_AddVariableNodeAttributes of the file src/ClientServer/address_space/internal/sopc_node_mgt_helper_internal.c of the component AddNodes Service. The manipulation of the argument UserAccessLevel leads to out-of-bounds read. It is possible to initiate the attack remotely. A high degree of complexity is needed for the attack. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The identifier of the patch is aafbd37d381b618312ebdf5ddf57027f62c14fdd. It is suggested to install a patch to address this issue.

CWE	CWE-125 CWE-119
Vendor	systerel
Product	s2opc
Published	Aug 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Systerel / S2OPC

1.7.0 1.7.1 1.7.2 1.7.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/394290 vuldb.com: https://vuldb.com/vuln/394290/cti vuldb.com: https://vuldb.com/cve/CVE-2026-78049 vuldb.com: https://vuldb.com/submit/881262 gitlab.com: https://gitlab.com/systerel/S2OPC/-/work_items/1787 gitlab.com: https://gitlab.com/systerel/S2OPC/-/merge_requests/1826 github.com: https://github.com/user-attachments/files/29702766/PoC.zip gitlab.com: https://gitlab.com/systerel/S2OPC/-/commit/aafbd37d381b618312ebdf5ddf57027f62c14fdd

Credits

🔍 Carnegie (VulDB User)