Credential Disclosure Vulnerability in Heatmiser Wifi Thermostat by Heatmiser
CVE-2018-25396

8.7HIGH

Key Information:

Vendor

Heatmiser

Status
Heatmiser Wifi Thermostat
Vendor
CVE Published:
29 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25396?

The Heatmiser Wifi Thermostat 1.7 has a significant vulnerability which permits unauthenticated attackers to access sensitive administrative credentials through the networkSetup.htm page. By sending a request to this endpoint, attackers can extract plaintext username and password values from HTML form fields. This exposure of credentials allows unauthorized individuals to gain administrative control over the thermostat, potentially compromising user privacy and security.

Affected Version(s)

Heatmiser Wifi Thermostat 1.7

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2018-25396 - Proof of Concept

References

https://www.exploit-db.com/exploits/45623
exploit
https://www.vulncheck.com/advisories/heatmiser-wifi-therm...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

d0wnp0ur
.