High severity · published May 27, 2026
CVE-2026-40852
Command injection via malicious configuration
7.2
CVSS
0.4%
EPSS
No
On KEV
Description
A highly authenticated attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
REX100 · Helmholz
0.0.0 through 3.0.2; 3.0.2 · source: vendor
RE
REX200/250 · Helmholz
0.0.0 through 8.4.4; 8.4.4 · source: vendor
MB
mbNET.mini · MB connect line
0.0.0 through 3.0.2; 3.0.2 · source: vendor
MB
mbNET/mbNET.rokey · MB connect line
0.0.0 through 8.4.4; 8.4.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40852
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40852
www.certvde.com
https://www.certvde.com/en/advisories/VDE-2026-054/
More from REX100
8.4
CVE-2026-40851
Command injection via USB
