Read the docs
TI-2026-56960 Aliases CVE-2026-82619GHSA-x4v2-7pqm-v4jq

Systerel S2OPC subscription_mgr.c use after free

Priority MEDIUM 57CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
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 was identified in Systerel S2OPC up to 1.7.3. The impacted element is the function monitored_item_event_filter_treatment_bs__init_event_filter_ctx_and_result of the file src/ClientServer/services/bgenc/subscription_mgr.c. Such manipulation of the argument EventFilter leads to use after free. The attack may be performed from remote. The exploit is publicly available and might be used. The name of the patch is a4cee16a851b971be447a6ed531173702c722b99. It is best practice to apply a patch to resolve this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00533 45th 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-2026-82619
  2. 2026-10-03 Alias added: GHSA-x4v2-7pqm-v4jq

References

Exploit 1

Patch 2

  • TI-2026-54290 Systerel S2OPC AddNodes Service sopc_node_mgt_helper_internal.c out-of-bounds CVSS 4.0MEDIUM 6.3
  • TI-2026-61689 S2OPC through 1.7.3 NULL Pointer Dereference in alloc_notification_message_items() CVSS 4.0MEDIUM 6.0
  • 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