How severe is CVE-2018-25396?

CVE-2018-25396 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-25396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2018-25396?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2018-25396 have an EU (EUVD) identifier?

Yes. CVE-2018-25396 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21918.

When was CVE-2018-25396 published?

CVE-2018-25396 was published on 2026-05-29 and last updated on 2026-06-17.

CVE-2018-25396

CVE-2018-25396 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-256.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2018-21918
Weakness: CWE-256
Published: 2026-05-29
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-25396?: 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.
How severe is CVE-2018-25396?: CVE-2018-25396 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-25396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2018-25396?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2018-25396 have an EU (EUVD) identifier?: Yes. CVE-2018-25396 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-21918.
When was CVE-2018-25396 published?: CVE-2018-25396 was published on 2026-05-29 and last updated on 2026-06-17.

References

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