Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds (CVE-2026-78049) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-78049

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

Answer in brief

CVE-2026-78049 records a Unknown severity vulnerability in Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds. The current sources do not mark it as known exploited. The current feed maps Systerel/S2OPC (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 22, 2026Updated Aug 22, 2026Source checked Aug 22, 2026First seen by HOL Aug 22, 2026Material review Aug 22, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Systerel/S2OPC (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Systerel/S2OPCgeneric	1.7.0 \|\| 1.7.1 \|\| 1.7.2 \|\| 1.7.3	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Systerel/S2OPC.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 22, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.