CVE-2023-27361

Name: CVE-2023-27361
Creator: NVD / NIST
Published: 2024-05-03T02:15:14.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2023-27361 is a high-severity vulnerability rated 8/10 on the CVSS scale. NETGEAR RAX30 rex_cgi JSON Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30 routers. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

NETGEAR RAX30 rex_cgi JSON Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30 routers. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of JSON data. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19355.

Metrics

CVSS 3.1

8/10

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.86%

53.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Netgear	Rax30 Firmware	< 1.0.9.92

References

https://kb.netgear.com/000065625/Security-Advisory-for-Post-Authentication-Buffer-Overflow-on-the-RAX30-PSV-2022-0302Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-495/Third Party Advisory
https://kb.netgear.com/000065625/Security-Advisory-for-Post-Authentication-Buffer-Overflow-on-the-RAX30-PSV-2022-0302Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-495/Third Party Advisory

Timeline

Published: May 3, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-27361?

How severe is CVE-2023-27361?

CVE-2023-27361 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27361?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-27361?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST