CVE-2026-78049
Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds
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.
INFO
Published Date :
Aug. 22, 2026, 11:16 p.m.
Last Modified :
Aug. 22, 2026, 11:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Install the patch aafbd37d381b618312ebdf5ddf57027f62c14fdd.
- Update the Systerel S2OPC software.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-78049.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-78049 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-78049
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-78049 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-78049 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Aug. 22, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:*'], 'vendor': 'Systerel', 'modules': ['AddNodes Service'], 'product': 'S2OPC', 'versions': [{'status': 'affected', 'version': '1.7.0'}, {'status': 'affected', 'version': '1.7.1'}, {'status': 'affected', 'version': '1.7.2'}, {'status': 'affected', 'version': '1.7.3'}]}] Added 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. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:N/AC:H/Au:N/C:N/I:N/A:P) Added CWE CWE-119 Added CWE CWE-125 Added Reference https://github.com/user-attachments/files/29702766/PoC.zip Added Reference https://gitlab.com/systerel/S2OPC/-/commit/aafbd37d381b618312ebdf5ddf57027f62c14fdd Added Reference https://gitlab.com/systerel/S2OPC/-/merge_requests/1826 Added Reference https://gitlab.com/systerel/S2OPC/-/work_items/1787 Added Reference https://vuldb.com/cve/CVE-2026-78049 Added Reference https://vuldb.com/submit/881262 Added Reference https://vuldb.com/vuln/394290 Added Reference https://vuldb.com/vuln/394290/cti