Stack-based buffer overflow in Home Flex - CVE-2026-4156
Published: March 17, 2026
Vulnerability identifier: #VU124062
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-4156
CWE-ID: CWE-121
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the handling of OCPP messages. A remote unauthenticated attacker on the local network can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Home Flex
How to mitigate CVE-2026-4156
Install updates from vendor's website.
Home Flex - update to 5.5.4.22