CVE-2018-21100

Authenticated command execution via undisclosed input handling

Published Apr 27, 2020 · Updated Aug 5, 2024

OS command injection in NETGEAR R7800 firmware before 1.0.2.60 allows remote authenticated users to execute commands over a local network. NETGEAR has not disclosed the affected interface, parameter, or missing validation that passes attacker-controlled input to an operating-system command. Access requires authentication and adjacent-network reachability; successful exploitation can read data, alter the device, and interrupt service.

CVSS severity7.1
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in NETGEAR R7800 firmware before 1.0.2.60 allows remote authenticated users to execute commands over a local network. NETGEAR has not disclosed the affected interface, parameter, or missing validation that passes attacker-controlled input to an operating-system command. Access requires authentication and adjacent-network reachability; successful exploitation can read data, alter the device, and interrupt service.

The record

CVE
CVE-2018-21100
Published
Apr 27, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 27, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1NETGEARCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:H/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.

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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
Privilegesauthenticated
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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