Bosch ELP Modules up to 65.2.11 SSH Service authorized_keys improper authorization

Summaryinfo

A vulnerability was found in Bosch ELP Modules up to 65.2.11. It has been classified as very critical. The impacted element is an unknown function of the file authorized_keys of the component SSH Service. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2026-56428. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Bosch ELP Modules up to 65.2.11 and classified as very critical. This issue affects an unknown code block of the file authorized_keys of the component SSH Service. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The SSH service on BSH ELP (Electronic Platform) modules contains a platform-specific vulnerability due to an improperly secured default configuration. An insecure, non-revocable SSH public key is included in the firmware's authorized_keys file for the root user. An attacker in possession of the corresponding private key could leverage it to bypass authentication and gain root-level access to the appliance.

The advisory is shared at psirt.bosch.com. The identification of this vulnerability is CVE-2026-56428 since 06/26/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/30/2026). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading to version 65.2.12 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Bosch

Name

• ELP Modules

Version

• 65.2.0
• 65.2.1
• 65.2.2
• 65.2.3
• 65.2.4
• 65.2.5
• 65.2.6
• 65.2.7
• 65.2.8
• 65.2.9
• 65.2.10
• 65.2.11

License

• commercial

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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