Cyber Resilience

CVE-2023-27410

Memory Safety in Siemens Scalance Lpe9403 Firmware ≤ 2.1

Memory Safety
Published
09 May 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 2.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0056 43th percentile
Risk Priority 26 floored blend · peak EPSS

Summary

CVE-2023-27410 is a low-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Siemens Scalance Lpe9403 Firmware. Its CVSS base score is 2.7 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 43th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

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…

more

an authenticated privileged attacker to cause a denial of service.

CWE(s)
CWE-122

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2025-40578Same product: Siemens Scalance Lpe9403
CVE-2025-40577Same product: Siemens Scalance Lpe9403
CVE-2025-40579Same product: Siemens Scalance Lpe9403
CVE-2025-40580Same product: Siemens Scalance Lpe9403
CVE-2023-27407Same product: Siemens Scalance Lpe9403
CVE-2025-27397Same product: Siemens Scalance Lpe9403
CVE-2023-27409Same product: Siemens Scalance Lpe9403
CVE-2025-27395Same product: Siemens Scalance Lpe9403
CVE-2025-40573Same product: Siemens Scalance Lpe9403
CVE-2023-27408Same product: Siemens Scalance Lpe9403

Affected Assets

siemens
scalance lpe9403 firmware
≤ 2.1

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.4.1

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 full match
prevents

Secure-development practices directly require bounds checking and safe memory handling that prevent heap overflows.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover heap-overflow flaws but does not prevent their introduction in code.

PR.PS-02 partial match
prevents

Timely patching removes known heap-overflow instances after they exist.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance can detect heap overflows before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates practices that reduce the likelihood of introducing heap overflows.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify bounds-checking and safe memory APIs that mitigate heap overflows.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture and engineering principles include memory-safety and input-validation controls that address heap overflows.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prescribe techniques (safe functions, bounds checks) that prevent heap-based buffer overflows.

A.8.32 Change management none match
none

Change management ensures controlled deployment of fixes for discovered heap-overflow vulnerabilities.

References