CVE-2023-23906

Missing authentication for critical function exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0...

7.5 High

Missing authentication for critical function exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0 and earlier, which may allow a remote unauthenticated attacker to execute some critical functions without authentication, e.g., rebooting the product.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.30%Up 1.2 points since May 10, 2023

What each source reports

NVD Score used 7.5

Record: CVE-2023-23906
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-306
Updated: 2026-11-02

CVE List 7.5

Record: CVE-2023-23906
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-306
Updated: 2026-11-02

EUVDEUVD-2023-27989 7.5

Record: EUVD-2023-27989
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-w9q9-jw2h-8gp3 7.5

Missing authentication for critical function exists in SkyBridge MB-A100/110 firmware Ver. 4.2.0...

Record: GHSA-w9q9-jw2h-8gp3
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-306
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-23906 is a high vulnerability (CVSS 7.5) in Seiko Solutions Inc. Skybridge Mb-a100/110, published May 10, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.30%, the 70th percentile. No source names a fixed version.