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TI-2018-15621 Aliases CVE-2018-25396GHSA-g2j8-j26j-56qh

Heatmiser Wifi Thermostat 1.7 Credential Disclosure via networkSetup.htm

Priority HIGH 77CWE-256Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-256.

Summary

Heatmiser Wifi Thermostat 1.7 contains a credential disclosure vulnerability that allows unauthenticated attackers to retrieve administrative credentials by accessing the networkSetup.htm page. Attackers can request the networkSetup.htm endpoint and extract plaintext username and password values from HTML form fields to gain administrative access to the thermostat.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00313 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
HeatmiserHeatmiser Wifi Thermostat1.7—No fix listedCNA
  • Heatmiser Wifi Thermostat VendorHeatmiser Affected 1.7 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-25396
  2. 2026-10-03 Alias added: GHSA-g2j8-j26j-56qh

References

Exploit 1

  • TI-2019-15376 Heatmiser Netmonitor 3.03 - Hardcoded Credentials CVSS 4.0CRITICAL 9.3
  • TI-2019-15377 Heatmiser Netmonitor 3.03 - HTML Injection CVSS 4.0MEDIUM 5.1
  • TI-2019-15760 Heatmiser Wifi Thermostat 1.7 Cross-Site Request Forgery CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences