CVE-2023-27361 NETGEAR RAX30 rex_cgi JSON Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
Network-adjacent authenticated attackers can execute arbitrary code as root via a stack-based buffer overflow in JSON parsing.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-27361?
CVE-2023-27361 is a medium-severity memory corruption vulnerability in NETGEAR RAX30, published on 3 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2023-27361?
It affects 1 product.
Products include Netgear Rax30 Firmware.
How do I fix CVE-2023-27361?
No fix has been published for CVE-2023-27361 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-27361 being exploited?
There is no known exploitation of CVE-2023-27361 in the wild and no public exploit code.
Other vulnerabilities in NETGEAR RAX30
- CVE-2025-44658 File upload in n/a
- CVE-2023-1327 Auth bypass in Netgear RAX30 (AX2400)
- CVE-2023-27852 Memory corruption in NETGEAR Nighthawk WiFi6 Router
- CVE-2023-27853 Other in NETGEAR Nighthawk WiFi6 Router
- CVE-2023-51635 NETGEAR RAX30 fing_dil Stack-based Buffer Overflow Remote Code Execution Vulnerability
Sources
Also known as GHSA-66rh-m5r2-4gx2.