CVE-2022-46422Network attack vector

Authenticated DoS via crafted firmware upload

Published Dec 20, 2022 · Updated Apr 17, 2025

Denial-of-service in Netgear WNR2000 v1 1.2.3.7 and earlier allows remote authenticated users to interrupt service by uploading a crafted firmware image. The firmware-update upload path accepts a crafted image without sufficient authenticity verification, allowing malformed firmware to reach the update handler. Authentication and access to the firmware update interface are required; the bounded consequence is router service interruption rather than confidentiality or integrity loss.

CVSS severity4.8
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial-of-service in Netgear WNR2000 v1 1.2.3.7 and earlier allows remote authenticated users to interrupt service by uploading a crafted firmware image. The firmware-update upload path accepts a crafted image without sufficient authenticity verification, allowing malformed firmware to reach the update handler. Authentication and access to the firmware update interface are required; the bounded consequence is router service interruption rather than confidentiality or integrity loss.

The record

CVE
CVE-2022-46422
Published
Dec 20, 2022
Updated
Apr 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-345, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
4.8NVDCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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