CVE-2021-45663

Stored script execution through undisclosed management input

Published Dec 26, 2021 · Updated Aug 4, 2024

Stored XSS in NETGEAR R7000 firmware before 1.0.11.126 allows remote authenticated users to execute scripts in the management interface. NETGEAR has not published the affected management-interface field, storage path, or the operation that fails to sanitize the persisted input. Exploitation requires adjacent-network access and high privileges, and successful script execution can read or alter data exposed to the management session.

CVSS severity6.1
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 NETGEAR R7000 firmware before 1.0.11.126 allows remote authenticated users to execute scripts in the management interface. NETGEAR has not published the affected management-interface field, storage path, or the operation that fails to sanitize the persisted input. Exploitation requires adjacent-network access and high privileges, and successful script execution can read or alter data exposed to the management session.

The record

CVE
CVE-2021-45663
Published
Dec 26, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.007
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 26, 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 vectoradjacent
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1MITRECVSS:3.1/AC:L/AV:A/A:N/C:H/I:H/PR:H/S:U/UI:N
6.1NETGEARCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.007JavaScript/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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