CVE-2022-34753
Published: 13 July 2022
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, ranked in the top 0.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
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.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-37701
Vulnerability details
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…
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Homer Controller MK2 (V1.31.460 and prior)
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
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.