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CVE-2023-27369: NETGEAR RAX30 soap_serverd Stack-based Buffer Overflow Authentication Bypass Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-03 · updated 2026-06-17
• Weakness: CWE-121

Description

NETGEAR RAX30 soap_serverd Stack-based Buffer Overflow Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the soap_serverd binary. When parsing the request headers, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19840.

Affected products

• NETGEAR RAX30: before 1.0.10.94 — fixed in 1.0.10.94

How to fix

Upgrade to a fixed version: NETGEAR RAX30 1.0.10.94. Check the vendor advisory for mitigations.

References

• https://kb.netgear.com/000065619/Security-Advisory-for-Multiple-Vulnerabilities-on-the-RAX30-PSV-2022-0348
• https://www.zerodayinitiative.com/advisories/ZDI-23-500/
• https://kb.netgear.com/000065619/Security-Advisory-for-Multiple-Vulnerabilities-on-the-RAX30-PSV-2022-0348
• https://www.zerodayinitiative.com/advisories/ZDI-23-500/

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