CVE-2020-13859Network attack vector

Unauthenticated management access via password-reset logic

Published Feb 1, 2021 · Updated Aug 4, 2024

Authentication bypass in Mofi Network MOFI4500-4GXeLTE 4.0.8-std allows remote attackers to access its setup wizard without a password. A malformed /etc/shadow entry for the undocumented mofidev account combines with LuCI forgotten-password logic to accept a passwordless login. Network access to cgi-bin/luci/quick/wizard is sufficient, granting management-interface access without valid credentials.

CVSS severity9.8
Critical
EPSS probability1.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Mofi Network MOFI4500-4GXeLTE 4.0.8-std allows remote attackers to access its setup wizard without a password. A malformed /etc/shadow entry for the undocumented mofidev account combines with LuCI forgotten-password logic to accept a passwordless login. Network access to cgi-bin/luci/quick/wizard is sufficient, granting management-interface access without valid credentials.

The record

CVE
CVE-2020-13859
Published
Feb 1, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, CWE-755, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-755Improper Handling of Exceptional Conditions
T1078.001Default Accounts

Public exploit references

No public exploit references are available in this record.

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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