CVE-2025-25305Public exploitNetwork attack vector

Traffic interception via disabled TLS certificate validation

Published Feb 18, 2025 · Updated Feb 18, 2025

Improper TLS certificate validation in Home Assistant Core before 2024.1.6 allows man-in-the-middle attackers to intercept outbound HTTPS traffic. Affected integrations pass the former verify_ssl boolean as aiohttp's ssl argument, where ssl=True disables certificate checking instead of enabling it. Exploitation requires control of the network path; attackers can read or alter exchanged data and interrupt affected requests.

CVSS severity7.0
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper TLS certificate validation in Home Assistant Core before 2024.1.6 allows man-in-the-middle attackers to intercept outbound HTTPS traffic. Affected integrations pass the former verify_ssl boolean as aiohttp's ssl argument, where ssl=True disables certificate checking instead of enabling it. Exploitation requires control of the network path; attackers can read or alter exchanged data and interrupt affected requests.

The record

CVE
CVE-2025-25305
Published
Feb 18, 2025
Updated
Feb 18, 2025
Vendor
Home Assistant
Product
Home Assistant Core
Classifications
CWE-940, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2024.1.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Home Assistant · Home Assistant Coreversion=< 2024.1.6

Published CVSS scores

7.0GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-940Improper Verification of Source of a Communication Channel
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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