CVE Tools
Sign in

CVE-2023-40478

Published: May 3, 2024Updated: Jan 3, 2025 Sources: CVE List NVD BDUCWE-121
6.8MEDIUM
NVD MITRE
EPSS Score
0.7%
Top 49.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

NETGEAR RAX30 Telnet CLI passwd 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. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the telnet CLI service, which listens on TCP port 23. 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-20009.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-121CWE-787

Affected Products

NETGEAR
commercial·USaka net gear
RAX30
Networking Infrastructure
rax30 firmware
Networking Infrastructure

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1163/
zerodayinitiative.com
https://kb.netgear.com/000065649/Security-Advisory-for-Post-authentication-Buffer-Overflow-on-the-RAX30-PSV-2023-0002
kb.netgear.com
https://kb.netgear.com/000065649/Security-Advisory-for-Post-authentication-Buffer-Overflow-on-the-RAX30-PSV-2023-0002
kb.netgear.com

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2023-40478 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows