CVE-2019-20746

Authenticated browser script execution

Published Apr 16, 2020 · Updated Aug 5, 2024

Reflected XSS in affected NETGEAR device firmware allows remote authenticated users on an adjacent network to run script in an administrator's browser. NETGEAR has not published the affected request parameter or the firmware handler that reflects it without safe output encoding. Exploitation requires high privileges, adjacent-network access, and user interaction, with no reported device-service interruption.

CVSS severity4.3
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in affected NETGEAR device firmware allows remote authenticated users on an adjacent network to run script in an administrator's browser. NETGEAR has not published the affected request parameter or the firmware handler that reflects it without safe output encoding. Exploitation requires high privileges, adjacent-network access, and user interaction, with no reported device-service interruption.

The record

CVE
CVE-2019-20746
Published
Apr 16, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Apr 16, 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 vectoradjacent
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NETGEARCVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/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)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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