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TI-2021-17327 Aliases CVE-2021-40142GHSA-5524-cf37-2p8f

In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can…

Priority LOW 38CWE-119Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.

Why it matters now

EPSS 0.02563 85th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:opcfoundation:local_discover_server:*:*:*:*:*:*:*:*before 1.04.402.463VulnerableOPC Foundation
cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:*:*:*:*:*:*:*:*before 2022VulnerableSiemens
cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:2022:-:*:*:*:*:*:*2022VulnerableSiemens
cpe:2.3:h:siemens:simatic_process_historian_opc_ua_server:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
cpe:2.3:a:siemens:simatic_net_pc:14:-:*:*:*:*:*:*14VulnerableSiemens
cpe:2.3:a:siemens:simatic_net_pc:15:-:*:*:*:*:*:*15VulnerableSiemens
cpe:2.3:a:siemens:simatic_net_pc:16:-:*:*:*:*:*:*16VulnerableSiemens
cpe:2.3:a:siemens:simatic_net_pc:17:-:*:*:*:*:*:*17VulnerableSiemens
cpe:2.3:a:siemens:simatic_wincc:-:*:*:*:*:*:*:*not specified by NVDVulnerableSiemens
cpe:2.3:a:siemens:simatic_wincc_runtime:-:*:*:*:professional:*:*:*not specified by NVDVulnerableSiemens
  • cpe:2.3:a:opcfoundation:local_discover_server:*:*:*:*:*:*:*:* Versions before 1.04.402.463 Vulnerable ·OPC Foundation
  • cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:*:*:*:*:*:*:*:* Versions before 2022 Vulnerable ·Siemens
  • cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:2022:-:*:*:*:*:*:* Versions 2022 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:simatic_process_historian_opc_ua_server:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
  • cpe:2.3:a:siemens:simatic_net_pc:14:-:*:*:*:*:*:* Versions 14 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:simatic_net_pc:15:-:*:*:*:*:*:* Versions 15 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:simatic_net_pc:16:-:*:*:*:*:*:* Versions 16 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:simatic_net_pc:17:-:*:*:*:*:*:* Versions 17 Vulnerable ·Siemens
  • cpe:2.3:a:siemens:simatic_wincc:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
  • cpe:2.3:a:siemens:simatic_wincc_runtime:-:*:*:*:professional:*:*:* Versions not specified by NVD Vulnerable ·Siemens
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:siemens:simatic_wincc_unified_scada_runtime:-:*:*:*:*:*:*:*not specified by NVDVulnerableSiemens
cpe:2.3:a:siemens:telecontrol_server_basic:3.0:*:*:*:*:*:*:*3.0VulnerableSiemens
  • cpe:2.3:a:siemens:simatic_wincc_unified_scada_runtime:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
  • cpe:2.3:a:siemens:telecontrol_server_basic:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Siemens

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40142
  2. 2026-10-03 Alias added: GHSA-5524-cf37-2p8f

References

Patch 2

Advisory 1

Sources

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