Yarbo up to 2.3.9 hard-coded credentials

Summaryinfo

A vulnerability described as critical has been identified in Yarbo up to 2.3.9. Affected by this issue is some unknown functionality. Executing a manipulation can lead to hard-coded credentials. This vulnerability is tracked as CVE-2026-7414. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Yarbo up to 2.3.9 and classified as very critical. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Yarbo firmware v2.3.9 contains hardcoded administrative credentials embedded in the firmware image. These credentials are identical across all devices running this firmware and cannot be changed or removed by end users, enabling trivial unauthorized access to device management interfaces by anyone who knows them.

The weakness was disclosed by Andreas Makris. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-7414 since 04/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/07/2026). The MITRE ATT&CK project declares the attack technique as T1110.001.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• Yarbo

Version

• 2.3.0
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5
• 2.3.6
• 2.3.7
• 2.3.8
• 2.3.9

CPE 2.3info

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CPE 2.2info

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