HOMEVULNERABILITIESCVE-2023-30766
CRITICAL

CVE-2023-30766

NVD-CWE-OtherPublished: June 13, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Hidden functionality issue 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.

NVD Source

Risk Analysis

KB-AHR and KB-IRIP series devices contain hidden functionality that can be exploited to execute arbitrary OS commands or alter device settings. This critical vulnerability has a CVSS score of 9.8.

No public exploit is known, and it is not in the KEV catalog. It is remotely exploitable with low attack complexity.

Recommended Action

Update affected KB-AHR and KB-IRIP devices to the specified patched firmware versions. Disable unnecessary services that may expose hidden functionality.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-30766 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

kbdevice12 product(s)
kb-ahr04d firmwarekb-ahr04dkb-ahr08d firmwarekb-ahr08dkb-ahr16d firmwarekb-ahr16dkb-irip04a firmwarekb-irip04akb-irip08a firmwarekb-irip08akb-irip16a firmwarekb-irip16a
Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://jvn.jp/en/vu/JVNVU90812349/
ADVISORYhttps://www.kbdevice.com/news/%e3%83%ac%e3%82%b3%e3%83%bc%e3%83%80%e3%83%bc%e3%81%ae%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e6%94%bb%e6%92%83%e3%81%ab%e5%af%be%e3%81%99%e3%82%8b%e3%82%a2%e3%83%83%e3%83%97%e3%83%87/
ADVISORYhttps://jvn.jp/en/vu/JVNVU90812349/
ADVISORYhttps://www.kbdevice.com/news/%e3%83%ac%e3%82%b3%e3%83%bc%e3%83%80%e3%83%bc%e3%81%ae%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e6%94%bb%e6%92%83%e3%81%ab%e5%af%be%e3%81%99%e3%82%8b%e3%82%a2%e3%83%83%e3%83%97%e3%83%87/

All References (4)

→
https://jvn.jp/en/vu/JVNVU90812349/Third Party Advisory
→
https://www.kbdevice.com/news/%e3%83%ac%e3%82%b3%e3%83%bc%e3%83%80%e3%83%bc%e3%81%ae%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e6%94%bb%e6%92%83%e3%81%ab%e5%af%be%e3%81%99%e3%82%8b%e3%82%a2%e3%83%83%e3%83%97%e3%83%87/Mitigation · Vendor Advisory
→
https://jvn.jp/en/vu/JVNVU90812349/Third Party Advisory
→
https://www.kbdevice.com/news/%e3%83%ac%e3%82%b3%e3%83%bc%e3%83%80%e3%83%bc%e3%81%ae%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e6%94%bb%e6%92%83%e3%81%ab%e5%af%be%e3%81%99%e3%82%8b%e3%82%a2%e3%83%83%e3%83%97%e3%83%87/Mitigation · Vendor Advisory

Quick Facts

CVE IDCVE-2023-30766
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessNVD-CWE-Other
CISA KEVNo
Affected1 vendor(s)
PublishedJun 13, 2023

Related CVEs (NVD-CWE-Other)

CVE-2006-7183
10.0
CVE-2022-4390
10.0
CVE-2004-0300
10.0
CVE-2006-6864
10.0
CVE-2007-1394
10.0
CVE-2002-1560
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-30766 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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