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Vulnerabilities

Vulnerability · CVE-2023-27408

A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1).

Published May 9, 2023 · catalog updated Oct 23, 2026 · scalance lpe9403 firmware

Last checked Oct 24, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-27408. EPSS is 0.17%. Act only if a listed version of scalance lpe9403 firmware is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low3.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Version ranges on file
Affected products
cpe siemens/scalance lpe9403 firmware

A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The mutex file is created with the permissions bits of . This file is used as a mutex for multiple applications interacting with i2c. This could allow an authenticated attacker with access to the SSH interface on the affected device to interfere with the integrity of the mutex and the data it protects.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe siemens/scalance lpe9403 firmware< 2.1

How to fix CVE-2023-27408

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-27408. EPSS is 0.17%. Act only if a listed version of scalance lpe9403 firmware is installed.

Which versions are affected?

Compare what you have installed with siemens/scalance lpe9403 firmware < 2.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-378. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 9, 2023 · NIST NVD

    Detected

    A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The mutex file is created with the permissions bits of . This file is used as a mutex for multiple applications interacting with i2c. This could allow an authenticated attacker with access to the SSH interface on the affected device to interfere with the integrity of the mutex and the data it protects.

  2. Oct 23, 2026 · NIST NVD

    Updated

    A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The mutex file is created with the permissions bits of . This file is used as a mutex for multiple applications interacting with i2c. This could allow an authenticated attacker with access to the SSH interface on the affected device to interfere with the integrity of the mutex and the data it protects.

Sources

  • CVE.orgVulnerability recordCVE-2023-27408

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-27408

    30-day exploitation probability 0.17%

    first.org
  • NIST NVDVulnerability recordCVE-2023-27408

    A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The mutex file is created with the permissions bits of . This file is used as a mutex for multiple applications interacting with i2c. This could allow an authenticated attacker with a

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 24, 2026
  • FIRST EPSSOct 24, 2026
  • NIST NVDOct 24, 2026