Gardyn Home Kit Firmware CVE-2025-29630

MEDIUM
Use of Hard-coded Cryptographic Key (CWE-321)
2025-07-25 [email protected]
Information Disclosure
6.6
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Apr 03, 2026 - 19:22 vuln.today
CVE Published
Jul 25, 2025 - 17:15 nvd
MEDIUM 6.6

DescriptionNVD

Gardyn Home Kit Firmware allows a remote attacker with the corresponding ssh private key to achieve remote root access.

AnalysisAI

Remote root access in Gardyn Home Kit Firmware via SSH private key compromise allows authenticated remote attackers with high privileges to execute arbitrary commands as root on affected devices. The vulnerability stems from improper cryptographic key management (CWE-321) and carries a CVSS score of 6.6; no public exploit code or active exploitation has been independently confirmed at the time of analysis.

Technical ContextAI

Gardyn Home Kit devices utilize SSH for remote management and authentication. The firmware improperly handles SSH private key material, exposing the authentication mechanism to compromise. CWE-321 (Use of Hard-Coded Cryptographic Key) indicates that the firmware may contain static or recoverable SSH keys, or fails to enforce proper key derivation and rotation practices. This allows an attacker in possession of the corresponding private key to bypass standard SSH authentication and gain root-level command execution on the device.

Affected ProductsAI

Gardyn Home Kit Firmware is affected by this vulnerability. Specific firmware versions are not explicitly stated in available references; users should consult the GitHub repositories listed in references (kristof-mattei/gardyn-hack and mselbrede/gardyn CVE-2025-29630.md documents) for detailed version information and impact scope.

RemediationAI

Users should immediately verify the integrity of their SSH private keys and consider key rotation on affected Gardyn Home Kit devices. Contact Gardyn support for a firmware patch addressing CWE-321; until a patched version is released, restrict SSH access to devices via network segmentation and firewall rules, and monitor SSH logs for unauthorized connection attempts. Refer to GitHub references (https://github.com/kristof-mattei/gardyn-hack/blob/main/CVE-2025-29630.md and https://github.com/mselbrede/gardyn/blob/main/CVE-2025-29630.md) for technical details and any available mitigation guidance from the research community.

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CVE-2025-29630 vulnerability details – vuln.today
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