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CVE-2023-30762: Improper authentication vulnerability exists in KB-AHR series and KB-IRIP series

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CRITICAL 9.8REMOTEUPGRADEUPGRADEUPGRADE

CVE-2023-30762 is a critical-severity flaw (CVSS 9.8) affecting kb-ahr04d firmware, kb-ahr08d firmware, kb-ahr16d firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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, K

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance0.7% (top 46%)
CISA exploited listNo
WeaknessCWE-287, CWE-306
Published2023-06-13
Last modified2026-06-17
Publisher (CNA): JPCERT/CC · Vendor: kbdevice

Share: LinkedIn · X · Reddit

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

kbdevice kb-ahr04d firmware UPGRADE
Affected: < 91110.1.101106.78
Fixed in: 91110.1.101106.78
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
kbdevice kb-ahr08d firmware UPGRADE
Affected: < 91210.1.101106.78
Fixed in: 91210.1.101106.78
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
kbdevice kb-ahr16d firmware UPGRADE
Affected: < 91310.1.101106.78
Fixed in: 91310.1.101106.78
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
kbdevice kb-irip04a firmware UPGRADE
Affected: < 95110.1.100290.78a
Fixed in: 95110.1.100290.78a
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
kbdevice kb-irip08a firmware UPGRADE
Affected: < 95210.1.100290.78a
Fixed in: 95210.1.100290.78a
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
kbdevice kb-irip16a firmware UPGRADE
Affected: < 95310.1.100290.78a
Fixed in: 95310.1.100290.78a
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-30762?

kb-ahr04d firmware: upgrade to 91110.1.101106.78; kb-ahr08d firmware: upgrade to 91210.1.101106.78; kb-ahr16d firmware: upgrade to 91310.1.101106.78. Exact commands for each OS are on this page.

Is CVE-2023-30762 being exploited?

CVE-2023-30762 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-30762 affect?

CVE-2023-30762 affects kb-ahr04d firmware, kb-ahr08d firmware, kb-ahr16d firmware. Severity is critical (CVSS 9.8). 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 versio

How urgent is CVE-2023-30762?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

References

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