CVE-2019-20004Network attack vector

Administrative takeover via IP-bound authorization persistence

Published Jan 5, 2020 · Updated Aug 5, 2024

Authentication bypass in Intelbras IWR 3000N 1.8.7 allows remote attackers to gain administrative control after a password change. The router binds administrative authorization to the client IP address that changes the administrator password and fails to revoke it for later clients using the same address. A legitimate administrator must first change the password from the shared address; an unauthenticated client at that address can then control the router.

CVSS severity8.8
High
EPSS probability1.17%
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 Intelbras IWR 3000N 1.8.7 allows remote attackers to gain administrative control after a password change. The router binds administrative authorization to the client IP address that changes the administrator password and fails to revoke it for later clients using the same address. A legitimate administrator must first change the password from the shared address; an unauthenticated client at that address can then control the router.

The record

CVE
CVE-2019-20004
Published
Jan 5, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-640
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 5, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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-640Weak Password Recovery Mechanism for Forgotten Password

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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