Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-78049— Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds

Quick assessment

Affected
Systerel S2OPC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Systerel S2OPC OPC UA Toolkit是Systerel公司的一款工业通信中间件工具包。 Systerel S2OPC OPC UA Toolkit 1.7.3及之前版本存在缓冲区错误漏洞，该漏洞源于AddNodes Service组件中函数SOPC_NodeMgtHelperInternal_AddVariableNodeAttributes对参数UserAccessLevel的操作，可能导致越界读取。

CVSS 3.7 · Low EPSS 0.62% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
Systerel S2OPC 1.7.0 affected
1.7.1 affected
1.7.2 affected
1.7.3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-78049

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
Systerel S2OPC OPC UA Toolkit 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Systerel S2OPC OPC UA Toolkit是Systerel公司的一款工业通信中间件工具包。 Systerel S2OPC OPC UA Toolkit 1.7.3及之前版本存在缓冲区错误漏洞，该漏洞源于AddNodes Service组件中函数SOPC_NodeMgtHelperInternal_AddVariableNodeAttributes对参数UserAccessLevel的操作，可能导致越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Systerel S2OPC 1.7.0 cpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-78049

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-78049

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-78049 (3)

Vendor Advisories for CVE-2026-78049 (1)

News Coverage for CVE-2026-78049 (1)

Other References for CVE-2026-78049 (1)

Other References for CVE-2026-78049 (1)

IV. Related Vulnerabilities

Same product: S2OPC
Same vendor: Systerel
Same weakness: CWE-125