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TI-2025-27065 Aliases CVE-2025-40581GHSA-xww6-q5p3-h6pp

Authentication bypass in Siemens SCALANCE LPE9403

Priority LOW 38CWE-288Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-288.

Summary

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V2.1 HF0 with SINEMA Remote Connect Edge Client installed). Affected devices are vulnerable to an authentication bypass. This could allow a non-privileged local attacker to bypass the authentication of the SINEMA Remote Connect Edge Client, and to read and modify the configuration parameters.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0016 5th percentileScored 2026-11-07
Fix Fixed SCALANCE LPE9403 (Siemens): V2.1 HF0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 V2.1 HF0V2.1 HF0Patch availableCNA
  • SCALANCE LPE9403 VendorSiemens Affected before V2.1 HF0 Fixed in V2.1 HF0 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:siemens:scalance_lpe9403_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableSiemens
cpe:2.3:h:siemens:scalance_lpe9403:-:*:*:*:*:*:*:*not specified by NVDRunning onSiemens
  • cpe:2.3:o:siemens:scalance_lpe9403_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD 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 HF0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Siemens SCALANCE LPE9403 V2.1 HF0

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2025-27066 OS command injection in Siemens SCALANCE LPE9403Priority LOW 38
    • TI-2025-27067 Cleartext transmission of sensitive information in Siemens SCALANCE LPE9403Priority LOW 28
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-40581
  2. 2026-10-03 Alias added: GHSA-xww6-q5p3-h6pp

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