CVE-2022-28373: Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 does not properly sanitize user-controlled parameters with

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CRITICAL 9.8REMOTEMITIGATE

CVE-2022-28373 is a critical-severity flaw (CVSS 9.8) affecting lvskihp indoorunit firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 does not properly sanitize user-controlled parameters within the crtcreadpartition function of the crtcrpc JSON listener in /usr/lib/lua/luci/crtc.lua. A remote attacker on the local network can inject shell metacharacters to achieve remote code execution as root.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.3% (top 16%)
CISA exploited list	No
Weakness	CWE-78
Published	2022-07-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: verizon

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

Am I affected?

Timeline

2022-07-14 13:15 UTCPublished CVE record published
2026-06-17 04:38 UTCUpdated Record last modified

verizon lvskihp indoorunit firmware MITIGATE

Affected: 3.4.66.162

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.4.66.162

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-2022-28373?

lvskihp indoorunit firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-28373 being exploited?

CVE-2022-28373 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-2022-28373 affect?

CVE-2022-28373 affects lvskihp indoorunit firmware. Severity is critical (CVSS 9.8). Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 does not properly sanitize user-controlled parameters within the crtcreadpartition function of the crtcrpc JSON listener in /usr/lib/lua/luci/crtc.lua. A remote attacker on the local netwo

How urgent is CVE-2022-28373?

Priority 65/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2022-28377 HIGH 7.5 MITIGATE MITIGATE On Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 and OutDoorUnit (ODU) 3.33.101.0 devices, the CRTC and
CVE-2022-28372 HIGH 7.5 MITIGATE MITIGATE On Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 and OutDoorUnit (ODU) 3.33.101.0 devices, the CRTC and
CVE-2022-28371 HIGH 7.5 MITIGATE MITIGATE On Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 and OutDoorUnit (ODU) 3.33.101.0 devices, the CRTC and
CVE-2022-28369 CRITICAL 9.8 MITIGATE Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 does not validate the user-provided URL within the crtcmod

References

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