CVE-2021-45619

Unauthenticated command injection via pre-authentication request

Published Dec 26, 2021 · Updated Aug 4, 2024

Command injection in NETGEAR router and extender firmware before the listed fixed releases allows remote attackers to execute commands via pre-authentication network requests. The vulnerable request-processing path passes attacker-controlled input to an operating-system command interpreter without adequate neutralization. Exploitation requires no credentials or user interaction and can compromise device confidentiality, integrity, and availability; affected models and fixed versions are enumerated in the NETGEAR advisory.

CVSS severity9.6
Critical
EPSS probability2.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in NETGEAR router and extender firmware before the listed fixed releases allows remote attackers to execute commands via pre-authentication network requests. The vulnerable request-processing path passes attacker-controlled input to an operating-system command interpreter without adequate neutralization. Exploitation requires no credentials or user interaction and can compromise device confidentiality, integrity, and availability; affected models and fixed versions are enumerated in the NETGEAR advisory.

The record

CVE
CVE-2021-45619
Published
Dec 26, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059
Attack vector
adjacent
Privileges
unauthenticated

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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.6NVDCVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:C/UI: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059Command and Scripting Interpreter

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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