CVE-2023-27853

LAN code execution via SOAP format string

Published Mar 10, 2023 · Updated Feb 27, 2025

Format string injection in NETGEAR RAX30 firmware before 1.0.10.94 allows remote attackers to execute arbitrary code via LAN SOAP requests. The soap_serverd service on TCP ports 5000 and 5043 uses strcat() unsafely while processing attacker-controlled SOAPAction data, enabling a format-string write. Access requires the Wi-Fi password or an Ethernet connection to the router's local network, and successful exploitation can take control of the device.

CVSS severity9.8
Critical
EPSS probability19.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Format string injection in NETGEAR RAX30 firmware before 1.0.10.94 allows remote attackers to execute arbitrary code via LAN SOAP requests. The soap_serverd service on TCP ports 5000 and 5043 uses strcat() unsafely while processing attacker-controlled SOAPAction data, enabling a format-string write. Access requires the Wi-Fi password or an Ethernet connection to the router's local network, and successful exploitation can take control of the device.

The record

CVE
CVE-2023-27853
Published
Mar 10, 2023
Updated
Feb 27, 2025
Vendor
NETGEAR
Product
RAX30
Classifications
CWE-120, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 27, 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?

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

  1. Affected versionversion=prior to V1.0.10.94

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

NETGEAR · RAX30version=prior to V1.0.10.94

Published CVSS scores

9.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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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