CVE-2022-28377Public exploitNetwork attack vector

Unauthorized RPC access via derivable static credentials

Published Jul 14, 2022 · Updated Aug 3, 2024

Authentication weakness in Verizon 5G Home LVSKIHP IDU 3.4.66.162 and ODU 3.33.101.0 allows remote attackers to access RPC endpoints. The CRTC and ODU RPC endpoints accept a pre-generated jrpc account password derivable from the IDU Ethernet MAC address by reproducing the firmware key-generation environment. Network reachability and knowledge of the MAC address are required; successful authentication permits access to protected RPC functionality.

CVSS severity7.5
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication weakness in Verizon 5G Home LVSKIHP IDU 3.4.66.162 and ODU 3.33.101.0 allows remote attackers to access RPC endpoints. The CRTC and ODU RPC endpoints accept a pre-generated jrpc account password derivable from the IDU Ethernet MAC address by reproducing the firmware key-generation environment. Network reachability and knowledge of the MAC address are required; successful authentication permits access to protected RPC functionality.

The record

CVE
CVE-2022-28377
Published
Jul 14, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-521, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-521Weak Password Requirements
T1078.001Valid Accounts: Default Accounts

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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