What is CVE-2023-30762?

CVE-2023-30762 is a critical-severity vulnerability in Kbdevice Kb-Ahr04d, classified under Improper Authentication. CVSS score: 9.8/10. Published 2023-06-13.

How severe is CVE-2023-30762?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Kbdevice Kb-Ahr04d

CVE-2023-30762

Improper authentication vulnerability exists in KB-AHR series and KB-IRIP series. If this vulnerability is exploited, an arbitrary OS command may be executed on the product or the device settings may be altered. Affected products and versions are as follows: KB-AHR04D versions prior to 91110.1.101106.78, KB-AHR08D versions prior to 91210.1.101106.78, KB-AHR16D versions prior to 91310.1.101106.78, KB-IRIP04A versions prior to 95110.1.100290.78A, KB-IRIP08A versions prior to 95210.1.100290.78A, and KB-IRIP16A versions prior to 95310.1.100290.78A.

Vulnerability class: Broken Authentication

Published 2023-06-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.9th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

References

www.kbdevice.com/news/レコーダーのネットワーク攻撃に対するアップデ/ (Mitigation, Vendor Advisory)
jvn.jp/en/vu/JVNVU90812349/ (Third Party Advisory)

Frequently asked questions

What is CVE-2023-30762?: CVE-2023-30762 is a critical-severity vulnerability in Kbdevice Kb-Ahr04d, classified under Improper Authentication. CVSS score: 9.8/10. Published 2023-06-13.
How severe is CVE-2023-30762?: Critical severity. CVSS v3 base score is 9.8 out of 10.