CVE-2023-27410Network attack vector

Authenticated service crash via oversized backup password

Published May 9, 2023 · Updated Jan 28, 2025

Heap-based buffer overflow in Siemens SCALANCE LPE9403 before 2.1 allows remote authenticated users to crash edgebox_web_app. edgebox_web_app accepts a backup password longer than 255 characters and writes beyond its heap buffer, terminating the process. Administrative access to the web interface is required; the documented consequence is interruption of that binary, not device-wide failure.

CVSS severity2.7
Low
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Siemens SCALANCE LPE9403 before 2.1 allows remote authenticated users to crash edgebox_web_app. edgebox_web_app accepts a backup password longer than 255 characters and writes beyond its heap buffer, terminating the process. Administrative access to the web interface is required; the documented consequence is interruption of that binary, not device-wide failure.

The record

CVE
CVE-2023-27410
Published
May 9, 2023
Updated
Jan 28, 2025
Vendor
Siemens
Product
SCALANCE LPE9403
Classifications
CWE-122, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions < V2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Siemens · SCALANCE LPE9403version=All versions < V2.1

Published CVSS scores

2.7Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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