CVE-2026-82929: CWE-321 Use of Hard-coded Cryptographic Key in F&F Filipowski mH-DEVELOPER
mH-DEVELOPER smart home module uses the same hard-coded SSH host keys on every device, with no per-device key generation. An attacker who extracts these keys from the firmware can set up a rogue SSH server that clients will trust without warning, enabling man-in-the-middle attacks and credential interception. This issue was fixed in version 3.0.30
AI Analysis
Technical Summary
CVE-2026-82929 is a vulnerability in the mH-DEVELOPER smart home module where the same hard-coded SSH host keys are used on every device. This lack of unique key generation per device allows an attacker who obtains the keys from the firmware to create a rogue SSH server that clients will trust without warning. This can facilitate man-in-the-middle attacks and interception of credentials. The vulnerability is addressed in version 3.0.30.
Potential Impact
An attacker with access to the hard-coded SSH host keys can impersonate legitimate devices by deploying rogue SSH servers. This enables man-in-the-middle attacks and the interception of sensitive credentials, potentially compromising device security and user data confidentiality.
Mitigation Recommendations
Upgrade affected devices to version 3.0.30 or later, where the issue has been fixed by implementing unique SSH host keys per device. No additional mitigation is required once the update is applied.
CVE-2026-82929: CWE-321 Use of Hard-coded Cryptographic Key in F&F Filipowski mH-DEVELOPER
Description
mH-DEVELOPER smart home module uses the same hard-coded SSH host keys on every device, with no per-device key generation. An attacker who extracts these keys from the firmware can set up a rogue SSH server that clients will trust without warning, enabling man-in-the-middle attacks and credential interception. This issue was fixed in version 3.0.30
CVSS v4.0
Score 6.3medium
Affected software
F&F Filipowski
mH-DEVELOPER
pkg:github/f&ffilipowski/mH-DEVELOPERRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82929 is a vulnerability in the mH-DEVELOPER smart home module where the same hard-coded SSH host keys are used on every device. This lack of unique key generation per device allows an attacker who obtains the keys from the firmware to create a rogue SSH server that clients will trust without warning. This can facilitate man-in-the-middle attacks and interception of credentials. The vulnerability is addressed in version 3.0.30.
Potential Impact
An attacker with access to the hard-coded SSH host keys can impersonate legitimate devices by deploying rogue SSH servers. This enables man-in-the-middle attacks and the interception of sensitive credentials, potentially compromising device security and user data confidentiality.
Mitigation Recommendations
Upgrade affected devices to version 3.0.30 or later, where the issue has been fixed by implementing unique SSH host keys per device. No additional mitigation is required once the update is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CERT-PL
- Date Reserved
- 2026-08-31T12:23:36.734Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aba5e98f7a7c54106a8a6f6
Added to database: 09/28/2026, 12:33:28 UTC
Last enriched: 09/28/2026, 12:48:17 UTC
Last updated: 09/29/2026, 01:57:22 UTC
Views: 14
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