CVE-2026-4157: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in ChargePoint Home Flex
CVE-2026-4157 is a high-severity OS command injection vulnerability in ChargePoint Home Flex devices, specifically in version 5.5.4.13. It arises from improper validation of user-supplied strings in OCPP message handling, allowing network-adjacent attackers to execute arbitrary code as root without authentication. The vulnerability was identified by ZDI as ZDI-CAN-26338. No official patch or remediation guidance is currently available from the vendor, and no known exploits are reported in the wild.
AI Analysis
Technical Summary
This vulnerability in ChargePoint Home Flex (version 5.5.4.13) involves improper neutralization of special elements used in OS commands (CWE-78). The flaw exists in the revssh service's handling of OCPP messages, where user input is not properly validated before being used in system calls. This allows an attacker with network adjacency to execute arbitrary code with root privileges without needing authentication. The CVSS 3.0 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. The vulnerability was published on April 11, 2026, and is tracked as ZDI-CAN-26338.
Potential Impact
Successful exploitation enables remote code execution as root on affected ChargePoint Home Flex devices, potentially leading to full system compromise. Because no authentication is required, attackers within the network can leverage this flaw to gain control over the device, impacting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the affected device to trusted sources only and monitor for unusual activity. Avoid exposing the device to untrusted networks. Follow vendor channels for updates on patches or official mitigations.
CVE-2026-4157: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in ChargePoint Home Flex
Description
CVE-2026-4157 is a high-severity OS command injection vulnerability in ChargePoint Home Flex devices, specifically in version 5.5.4.13. It arises from improper validation of user-supplied strings in OCPP message handling, allowing network-adjacent attackers to execute arbitrary code as root without authentication. The vulnerability was identified by ZDI as ZDI-CAN-26338. No official patch or remediation guidance is currently available from the vendor, and no known exploits are reported in the wild.
CVSS v3.0
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in ChargePoint Home Flex (version 5.5.4.13) involves improper neutralization of special elements used in OS commands (CWE-78). The flaw exists in the revssh service's handling of OCPP messages, where user input is not properly validated before being used in system calls. This allows an attacker with network adjacency to execute arbitrary code with root privileges without needing authentication. The CVSS 3.0 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. The vulnerability was published on April 11, 2026, and is tracked as ZDI-CAN-26338.
Potential Impact
Successful exploitation enables remote code execution as root on affected ChargePoint Home Flex devices, potentially leading to full system compromise. Because no authentication is required, attackers within the network can leverage this flaw to gain control over the device, impacting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the affected device to trusted sources only and monitor for unusual activity. Avoid exposing the device to untrusted networks. Follow vendor channels for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- zdi
- Date Reserved
- 2026-03-13T20:34:14.213Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d99e6e1cc7ad14da1225b9
Added to database: 04/11/2026, 01:05:50 UTC
Last enriched: 05/26/2026, 20:20:21 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 126
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