CVE-2022-29729Public exploitNetwork attack vector

Admin credential disclosure via exposed MAC-derived password

Published May 27, 2022 · Updated Aug 3, 2024

Weak credential generation in Verizon 4G LTE Network Extender firmware 0.4.038.2131 allows remote attackers to derive the admin password. The web login page discloses the device MAC address, and the password algorithm appends its final four characters to the fixed LTEFemto string. The web interface must be network-reachable and retain default credentials; successful derivation exposes administrator access, with no direct integrity or availability impact documented.

CVSS severity7.5
High
EPSS probability1.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak credential generation in Verizon 4G LTE Network Extender firmware 0.4.038.2131 allows remote attackers to derive the admin password. The web login page discloses the device MAC address, and the password algorithm appends its final four characters to the fixed LTEFemto string. The web interface must be network-reachable and retain default credentials; successful derivation exposes administrator access, with no direct integrity or availability impact documented.

The record

CVE
CVE-2022-29729
Published
May 27, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-521, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 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 National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
T1078Valid 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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