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Vulnerabilities

Vulnerability · CVE-2023-27407

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

Published May 9, 2023 · catalog updated Oct 24, 2026 · scalance lpe9403 firmware

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-27407. EPSS is 1.30%. 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
Critical9.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.30%
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 web based management of affected device does not properly validate user input, making it susceptible to command injection. This could allow an authenticated remote attacker to access the underlying operating system as the root user.

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-2023-27407

  • Upgrade

    CVE-2023-27407 lists a fix boundary at 2.1. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 2.1

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

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-2023-27407. EPSS is 1.30%. 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-77: Command Injection; CWE-78: OS Command Injection. EPSS 1.30%. 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 web based management of affected device does not properly validate user input, making it susceptible to command injection. This could allow an authenticated remote attacker to access the underlying operating system as the root user.

  2. Oct 24, 2026 · NIST NVD

    Updated

    A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The web based management of affected device does not properly validate user input, making it susceptible to command injection. This could allow an authenticated remote attacker to access the underlying operating system as the root user.

Sources

  • CVE.orgVulnerability recordCVE-2023-27407

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2023-27407

    A vulnerability has been identified in SCALANCE LPE9403 (All versions < V2.1). The web based management of affected device does not properly validate user input, making it susceptible to command injection. This could allow an authenticated remote attacker to access the underlying

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 25, 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
  • NIST NVDOct 24, 2026