CVE-2023-36669: Missing Authentication for a Critical Function within the Kratos NGC Indoor Unit (IDU) before 11.4 allows remo

Q: How do I fix CVE-2023-36669?

ngc indoor unit firmware: upgrade to 11.4. Exact commands for each OS are on this page.

Q: Is CVE-2023-36669 being exploited?

CVE-2023-36669 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-36669 affect?

CVE-2023-36669 affects ngc indoor unit firmware. Severity is critical (CVSS 9.8). Missing Authentication for a Critical Function within the Kratos NGC Indoor Unit (IDU) before 11.4 allows remote attackers to obtain arbitrary control of the IDU/ODU system. Any attacker with layer-3 network access to the IDU can impersonat

Q: How urgent is CVE-2023-36669?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-36669 is a critical-severity flaw (CVSS 9.8) affecting ngc indoor unit firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Missing Authentication for a Critical Function within the Kratos NGC Indoor Unit (IDU) before 11.4 allows remote attackers to obtain arbitrary control of the IDU/ODU system. Any attacker with layer-3 network access to the IDU can impersonate the Touch Panel Unit (TPU) within the IDU by sending crafted TCP requests to the IDU.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-306
Published	2023-07-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kratosdefense

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

Am I affected?

Timeline

2023-07-18 18:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

kratosdefense ngc indoor unit firmware UPGRADE

Affected: < 11.4

Fixed in: 11.4

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-2023-36669?

ngc indoor unit firmware: upgrade to 11.4. Exact commands for each OS are on this page.

Is CVE-2023-36669 being exploited?

CVE-2023-36669 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-2023-36669 affect?

CVE-2023-36669 affects ngc indoor unit firmware. Severity is critical (CVSS 9.8). Missing Authentication for a Critical Function within the Kratos NGC Indoor Unit (IDU) before 11.4 allows remote attackers to obtain arbitrary control of the IDU/ODU system. Any attacker with layer-3 network access to the IDU can impersonat

How urgent is CVE-2023-36669?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-36670 CRITICAL 9.8 MITIGATE A remotely exploitable command injection vulnerability was found on the Kratos NGC-IDU 9.1.0.4

References

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