CVE-2026-78049
Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds
- State
- Published
- Severity
- 6.3 Medium
- Published
- Aug 22, 2026
- Updated
- Aug 27, 2026
- Reserved
- Aug 22, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 3.7 Low | 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 | VulDB |
| 3.0 | 3.7 Low | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 2.6 Low | AV:N/AC:H/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
S2OPCSysterel |
|
References
- VDB-394290 | Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-boundsvdb-entrytechnical-description
- VDB-394290 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-78049 | CVE Analysis and Reportthird-party-advisory
- Submit #881262 | Systerel S2OPC 1.7.3 Heap-based Out-of-Bounds Readthird-party-advisory
- https://gitlab.com/systerel/S2OPC/-/work_items/1787related
- https://gitlab.com/systerel/S2OPC/-/merge_requests/1826patch
- https://github.com/user-attachments/files/29702766/PoC.zipexploit
- https://gitlab.com/systerel/S2OPC/-/commit/aafbd37d381b618312ebdf5ddf57027f62c14fddpatch
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