CVE-2019-20738

Browser data access and modification via stored scripts

Published Apr 16, 2020 · Updated Aug 5, 2024

Stored XSS in affected NETGEAR router, gateway, and WiFi-system firmware allows attackers to read or alter browser data. NETGEAR has not published the input field, storage locus, rendering path, or missing output-neutralization operation that causes the script to persist. Exploitation requires adjacent-network access and user interaction, and successful script execution is confined to the affected web interface.

CVSS severity5.2
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in affected NETGEAR router, gateway, and WiFi-system firmware allows attackers to read or alter browser data. NETGEAR has not published the input field, storage locus, rendering path, or missing output-neutralization operation that causes the script to persist. Exploitation requires adjacent-network access and user interaction, and successful script execution is confined to the affected web interface.

The record

CVE
CVE-2019-20738
Published
Apr 16, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
adjacent
Privileges
unauthenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.2NETGEARCVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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