HOMEVULNERABILITIESCVE-2023-27361
HIGH

CVE-2023-27361

CWE-121Published: May 3, 2024· Updated: Jun 17, 2026

8.0
CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2023-27361 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.0.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgear2 product(s)
rax30 firmwarerax30
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (4)

→
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

Quick Facts

CVE IDCVE-2023-27361
CVSS Score8.0 / 10
SeverityHIGH
WeaknessCWE-121
CISA KEVNo
Affected1 vendor(s)
PublishedMay 3, 2024

Related CVEs (CWE-121)

CVE-2017-20230
10.0
CVE-2026-12847
10.0
CVE-2014-9190
10.0
CVE-2020-14498
10.0
CVE-2026-12485
10.0
CVE-2023-3943
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-27361 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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