Heatmiser Netmonitor 3.03 contains a hardcoded credentials vulnerability in the networkSetup.htm page with predictable admin login credentials. Attackers can access the device by using the hard-coded username 'admin' and password 'admin' in the hidden form input fields.
https://www.zoneregeling.nl/heatmiser/netmonitor-handleiding.pdf
https://www.vulncheck.com/advisories/heatmiser-netmonitor-hardcoded-credentials
https://www.exploit-db.com/exploits/47823
https://web.archive.org/web/20190724160628/https://www.heatmiser.com/en/
Published: 2026-02-12
Updated: 2026-02-13
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
Severity: High
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High
Base Score: 9.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: Critical
EPSS: 0.00031