Read the docs
TI-2026-54290 Aliases CVE-2026-78049GHSA-cq93-frxj-593v

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

Priority MEDIUM 61CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00624 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SysterelS2OPC1.7.0; 1.7.1; 1.7.2; 1.7.3—No fix listedCNA
  • S2OPC VendorSysterel Affected 1.7.0; 1.7.1; 1.7.2; 1.7.3 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:*——Systerel
  • cpe:2.3:a:systerel:s2opc:*:*:*:*:*:*:*:* Versions — — ·Systerel

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-78049
  2. 2026-10-03 Alias added: GHSA-cq93-frxj-593v
  3. 2026-11-04 EPSS moved to the 50th–90th percentile

References

Exploit 1

Patch 2

Other 1

  • TI-2026-61689 S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items() CVSS 4.0MEDIUM 6.0
  • TI-2026-56960 Systerel S2OPC subscription_mgr.c use after free CVSS 4.0MEDIUM 5.3
  • TI-2026-56959 Systerel S2OPC String Array Range Writing sopc_builtintypes.c set_range_matrix_on_string_array out-of-bounds CVSS 4.0MEDIUM 5.3
  • TI-2026-15394 Systerel S2OPC DeleteMonitoredItemsRequest state_machine.c out-of-bounds CVSS 4.0MEDIUM 4.8
  • TI-2026-08554 Improper Certificate Validation in S2OPC CVSS 3.1HIGH 7.3
  • TI-2026-15010 Improper Certificate Validation in S2OPC CVSS 3.1MEDIUM 5.6
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences