HOMEVULNERABILITIESCVE-2022-28377
HIGH

CVE-2022-28377

CWE-521Published: July 14, 2022· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

On Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 and OutDoorUnit (ODU) 3.33.101.0 devices, the CRTC and ODU RPC endpoints rely on a static account username/password for access control. This password can be generated via a binary included in the firmware, after ascertaining the MAC address of the IDU's base Ethernet interface, and adding the string DEVICE_MANUFACTURER='Wistron_NeWeb_Corp.' to /etc/device_info to replicate the host environment. This occurs in /etc/init.d/wnc_factoryssidkeypwd (IDU).

NVD Source

Technical Analysis

CVE-2022-28377 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), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

verizon4 product(s)
lvskihp indoorunit firmwarelvskihp indoorunitlvskihp outdoorunit firmwarelvskihp outdoorunit
Source: NVD CPE · 4 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://github.com/JousterL/SecWriteups/blob/main/Verizon%20LVSKIHP%205G%20Modem/readme.md
ADVISORYhttps://www.verizon.com/info/reportsecurityvulnerability/
ADVISORYhttps://github.com/JousterL/SecWriteups/blob/main/Verizon%20LVSKIHP%205G%20Modem/readme.md
ADVISORYhttps://www.verizon.com/info/reportsecurityvulnerability/

All References (4)

→
https://github.com/JousterL/SecWriteups/blob/main/Verizon%20LVSKIHP%205G%20Modem/readme.mdExploit · Third Party Advisory
→
https://www.verizon.com/info/reportsecurityvulnerability/Vendor Advisory
→
https://github.com/JousterL/SecWriteups/blob/main/Verizon%20LVSKIHP%205G%20Modem/readme.mdExploit · Third Party Advisory
→
https://www.verizon.com/info/reportsecurityvulnerability/Vendor Advisory

Quick Facts

CVE IDCVE-2022-28377
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-521
CISA KEVNo
Affected1 vendor(s)
PublishedJul 14, 2022

Related CVEs (CWE-521)

CVE-2020-11966
9.8
CVE-2019-17444
9.8
CVE-2019-9950
9.8
CVE-2019-9096
9.8
CVE-2017-18857
9.8
CVE-2020-26201
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-28377 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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