Cyber Resilience

CVE-2022-34753

RCE in Schneider-Electric Spacelogic C-Bus Home Controller Firmware ≤ 1.31.460

Public PoCHigh EPSSRCECommand Injection
Published
13 July 2022
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.71 99.4th percentile
Risk Priority 90 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2022-34753 is a high-severity OS Command Injection (CWE-78) vulnerability in Schneider-Electric Spacelogic C-Bus Home Controller Firmware. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

A CWE-78 OS command injection vulnerability affects the SpaceLogic C-Bus Home Controller (5200WHC2), formerly known as the C-Bus Wiser Home Controller MK2, in firmware versions 1.31.460 and earlier. The flaw stems from improper neutralization of special elements in operating system commands, allowing an attacker to inject and execute arbitrary commands on the device.

An attacker with network access and low privileges can exploit the issue without user interaction to achieve remote root code execution. The CVSS 3.1 score of 8.8 reflects the combination of network attack vector, low complexity, and full confidentiality, integrity, and availability impact once the command path is compromised.

Schneider Electric's security notification SEVD-2022-193-02 addresses the vulnerability and provides remediation guidance for the affected controller. Public exploit code demonstrating remote root access has been published, and the CVE maintains a high EPSS score with a recorded peak of 0.9692.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

A CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability exists that could cause remote root exploit when the command is compromised. Affected Products: SpaceLogic C-Bus Home Controller (5200WHC2), formerly known as C-Bus Wiser…

more

Homer Controller MK2 (V1.31.460 and prior)

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
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.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-25555Same vendor: Schneider-Electric
CVE-2023-25554Same vendor: Schneider-Electric
CVE-2026-9717Same vendor: Schneider-Electric
CVE-2023-29412Same vendor: Schneider-Electric
CVE-2025-8628Shared CWE-78
CVE-2024-22836Shared CWE-78
CVE-2023-25826Shared CWE-78
CVE-2026-65590Shared CWE-78
CVE-2026-72880Shared CWE-78
CVE-2024-28125Shared CWE-78

Affected Assets

schneider-electric
spacelogic c-bus home controller firmware
≤ 1.31.460

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

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Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

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Validate
Prove the fix (OWASP ASVS)
  • V1.2.5
  • V1.2.8
  • V15.2.5

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

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 mostly match
prevents

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
prevents

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

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.

finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References