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TI-2023-12142 Aliases CVE-2023-27410GHSA-5589-g6gq-7gfx

Heap-based buffer overflow in Siemens SCALANCE LPE9403

Priority LOW 14CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). A heap-based buffer overflow vulnerability was found in the `edgebox_web_app` binary. The binary will crash if supplied with a backup password longer than 255 characters. This could allow an authenticated privileged attacker to cause a denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00556 46th percentileScored 2026-11-07
Fix Fixed SCALANCE LPE9403 (Siemens): V2.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
SiemensSCALANCE LPE9403before V2.1V2.1Patch availableCNA
  • SCALANCE LPE9403 VendorSiemens Affected before V2.1 Fixed in V2.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:*before 2.1VulnerableSiemens
cpe:2.3:h:siemens:scalance_lpe9403:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
  • cpe:2.3:o:siemens:scalance_lpe9403_firmware:*:*:*:*:*:*:*:* Versions before 2.1 Vulnerable ·Siemens
  • cpe:2.3:h:siemens:scalance_lpe9403:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens

Remediation

  • Fix · CNA SCALANCE LPE9403 (Siemens) Fixed in V2.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-27410
  2. 2026-10-03 Alias added: GHSA-5589-g6gq-7gfx

References

Advisory 1

  • TI-2022-00753 A flaw was found in the way the "flags" member of the new pipe buffer structure was… KEVCVSS 3.1HIGH 7.8
  • TI-2021-02923 Out-of-bounds write in polkit KEVCVSS 3.1HIGH 7.8
  • TI-2021-02413 NULL pointer deref in signature_algorithms processing CVSS 3.1MEDIUM 5.9
  • TI-2023-12139 Command injection in Siemens SCALANCE LPE9403 CVSS 3.1CRITICAL 9.9
  • TI-2025-20231 A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All… CVSS 4.0HIGH 8.7
  • TI-2025-20230 Path traversal in Siemens SCALANCE LPE9403 CVSS 4.0HIGH 8.6
See all 26 →

Sources

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