CVE-2023-40480

Root code execution via unvalidated DHCP string

Published May 3, 2024 · Updated Aug 2, 2024

Command injection in the DHCP server in NETGEAR RAX30 firmware before 1.0.9.92 allows remote attackers to execute code as root. The DHCP server passes a user-supplied string to a system call without validating it. Access requires the WiFi password or an Ethernet connection to the router, but no router authentication, and successful injection grants root execution.

CVSS severity8.8
High
EPSS probability1.27%
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 the DHCP server in NETGEAR RAX30 firmware before 1.0.9.92 allows remote attackers to execute code as root. The DHCP server passes a user-supplied string to a system call without validating it. Access requires the WiFi password or an Ethernet connection to the router, but no router authentication, and successful injection grants root execution.

The record

CVE
CVE-2023-40480
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
NETGEAR
Product
RAX30
Classifications
CWE-78, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.6.74_1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

NETGEAR · RAX30version=1.0.6.74_1
NETGEAR · RAX30 Firmwareversion=0 <1.0.9.92

Published CVSS scores

8.8Zero Day InitiativeCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8NETGEARCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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.

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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1210Exploitation of Remote Services

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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