CVE-2026-4157 ChargePoint CVE debrief

Who should care

Defenders responsible for ChargePoint Home Flex devices, network administrators, and security teams should assess exposure and verify potential code execution impact. Operators of ChargePoint Home Flex devices, platform administrators, and vulnerability management teams should prioritize patching or implementing compensating controls. Security teams should review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-4157 is a high-severity vulnerability in ChargePoint Home Flex devices that allows network-adjacent attackers to execute arbitrary code without authentication. Defenders should verify exposure, assess potential impact, and prioritize patching or implementing compensating controls.

• Potential remote code execution in ChargePoint Home Flex devices
• Network-adjacent attackers can exploit without authentication
• Verification of firmware versions and patch application required
• Possible impact on connected systems and network security

Technical summary

The ChargePoint Home Flex device vulnerability, tracked as CVE-2026-4157, allows network-adjacent attackers to execute arbitrary code without authentication. This is due to improper validation of user-supplied strings in OCPP messages, which can lead to system call execution in the context of root. The vulnerability exists within the handling of OCPP messages, specifically due to a lack of proper validation of user-supplied strings before executing system calls. An attacker can leverage this vulnerability to execute code in the context of root.

Defensive priority

High priority for network-adjacent system checks and potential code execution impact verification

Recommended defensive actions

• Verify and apply firmware updates from ChargePoint if available
• Restrict network access to ChargePoint Home Flex devices
• Monitor ChargePoint Home Flex devices for suspicious activity
• Implement additional security controls for network-adjacent systems
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability exists in ChargePoint Home Flex devices within the handling of OCPP messages, specifically due to a lack of proper validation of user-supplied strings before executing system calls. Evidence is based on CVE Program and NVD details. Defenders should verify exposure, assess potential impact, and prioritize patching or implementing compensating controls. The specific flaw exists within the handling of OCPP messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.