CVE-2025-29628Public exploitNetwork attack vector

Device takeover via cleartext IoT Hub credentials

Published Jul 25, 2025 · Updated Feb 25, 2026

Cleartext credential retrieval in Gardyn Home Kit Firmware before master.619 allows man-in-the-middle attackers to control devices. The conn.py scheduler requests the Azure IoT Hub connection string every 30 seconds from a hard-coded HTTP endpoint without transport integrity. An attacker able to intercept and alter that response can redirect the kit to an attacker-controlled IoT Hub, capture credentials, and issue device-management commands.

CVSS severity9.4
Critical
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential retrieval in Gardyn Home Kit Firmware before master.619 allows man-in-the-middle attackers to control devices. The conn.py scheduler requests the Azure IoT Hub connection string every 30 seconds from a hard-coded HTTP endpoint without transport integrity. An attacker able to intercept and alter that response can redirect the kit to an attacker-controlled IoT Hub, capture credentials, and issue device-management commands.

The record

CVE
CVE-2025-29628
Published
Jul 25, 2025
Updated
Feb 25, 2026
Vendor
Gardyn
Product
Gardyn Home Kit Firmware
Classifications
CWE-924, CWE-319, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <master.619

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Gardyn · Gardyn Home Kit Firmwareversion=0 <master.619

Published CVSS scores

8.3CISACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
9.4MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-924Improper Enforcement of Message Integrity During Transmission in a Communication Channel
CWE-319Cleartext Transmission of Sensitive Information
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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