CVE-2019-19142Public exploitNetwork attack vector

Firmware replacement via unauthenticated upload handler

Published Jan 17, 2020 · Updated Aug 5, 2024

Missing authentication in Intelbras WRN240 firmware 2.0.0 allows remote attackers to replace device firmware over the network. The incoming/Firmware.cfg handler accepts a multipart POST containing a firmware image without validating an administrative session. Network access to the router management interface is sufficient, and a successful upload replaces the trusted system image.

CVSS severity7.5
High
EPSS probability7.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Intelbras WRN240 firmware 2.0.0 allows remote attackers to replace device firmware over the network. The incoming/Firmware.cfg handler accepts a multipart POST containing a firmware image without validating an administrative session. Network access to the router management interface is sufficient, and a successful upload replaces the trusted system image.

The record

CVE
CVE-2019-19142
Published
Jan 17, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1601.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 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

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 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 exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1601.001Modify System Image: Device Firmware

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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