CVE-2026-78049: Out-of-Bounds Read in Systerel S2OPC
Description
CVE-2026-78049 is an out-of-bounds read vulnerability in Systerel S2OPC versions 1.7.0 through 1.7.3. It occurs in the AddNodes Service component, specifically in the SOPC_NodeMgtHelperInternal_AddVariableNodeAttributes function. The vulnerability is triggered by manipulation of the UserAccessLevel argument. Exploitation requires a high degree of complexity and can be initiated remotely. A patch identified by commit aafbd37d381b618312ebdf5ddf57027f62c14fdd is available to address this issue. The CVSS 4.0 base score is 6.3, indicating medium severity.
CVSS v4.0
Score 6.3medium
Affected software
Systerel
S2OPC
pkg:github/systerel/S2OPCcpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An out-of-bounds read vulnerability exists in Systerel S2OPC up to version 1.7.3 in the function SOPC_NodeMgtHelperInternal_AddVariableNodeAttributes within the AddNodes Service component. The flaw is caused by improper handling of the UserAccessLevel argument, allowing remote attackers to trigger an out-of-bounds read. Exploitation is considered difficult due to the high complexity required. The vulnerability has been publicly disclosed, and a patch is available identified by commit aafbd37d381b618312ebdf5ddf57027f62c14fdd.
Potential Impact
Successful exploitation of this vulnerability could lead to an out-of-bounds read, potentially causing application crashes or information disclosure. However, the attack complexity is high, and no known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability, identified by commit aafbd37d381b618312ebdf5ddf57027f62c14fdd. It is recommended to apply this patch to affected versions 1.7.0 through 1.7.3 of Systerel S2OPC to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-22T07:44:38.629Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8a25c9acd9273b49994b75
Added to database: 08/22/2026, 22:42:17 UTC
Last enriched: 09/11/2026, 01:48:20 UTC
Last updated: 10/07/2026, 06:48:18 UTC
Views: 76
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