Security Resilience

CVE-2024-0298

Command Injection in Totolink N200Re Firmware 9.3.5u.6139_b20201216

Public PoCCommand Injection
Published
08 January 2024
Modified
21 November 2024
CVSS Score v3.1 7.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.038 90th percentile
Risk Priority 63 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2024-0298 is a high-severity OS Command Injection (CWE-78) vulnerability in Totolink N200Re Firmware. Its CVSS base score is 7.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 10% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

A vulnerability classified as critical exists in the Totolink N200RE router running firmware 9.3.5u.6139_B20201216. It resides in the setDiagnosisCfg function within /cgi-bin/cstecgi.cgi, where improper handling of the ip argument permits OS command injection. The issue is tracked as CVE-2024-0298 with CWE-78 and carries a CVSS 3.1 base score of 7.3.

Remote unauthenticated attackers can supply a crafted ip value to the CGI endpoint and execute arbitrary operating-system commands. Successful exploitation yields limited effects on confidentiality, integrity, and availability. A working exploit has been made public, and the vendor did not respond to early disclosure notification.

The associated EPSS probability rose from a low starting value to a peak of 0.0656 on 2025-01-22 before receding to the current 0.0207, indicating that exploitation interest increased well after the initial publication. No official patches or mitigation guidance appear in the referenced sources.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

A vulnerability was found in Totolink N200RE 9.3.5u.6139_B20201216. It has been classified as critical. Affected is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to os command injection. It is possible to launch the…

more

attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-249864. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
attack.mitre.org →
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
attack.mitre.org →
T1021.004 SSH Lateral Movement
Adversaries may use [Valid Accounts](https://attack.
attack.mitre.org →
T1021.008 Direct Cloud VM Connections Lateral Movement
Adversaries may leverage [Valid Accounts](https://attack.
attack.mitre.org →
T1027.001 Binary Padding Stealth
Adversaries may use binary padding to add junk data and change the on-disk representation of malware.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-0299Same product: Totolink N200Re
CVE-2024-0297Same product: Totolink N200Re
CVE-2024-0296Same product: Totolink N200Re
CVE-2025-7154Same product: Totolink N200Re
CVE-2024-24333Same vendor: Totolink
CVE-2023-37173Same vendor: Totolink
CVE-2023-48811Same vendor: Totolink
CVE-2024-57019Same vendor: Totolink
CVE-2024-57017Same vendor: Totolink
CVE-2023-4410Same vendor: Totolink

Affected Assets

totolink
n200re firmware
9.3.5u.6139_b20201216

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.5
  • V1.2.8

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover missing or incorrect command sanitization during development.

SI-10 Information Input Validation good match

Input validation directly neutralizes or rejects special characters that would otherwise alter OS command structure.

AC-6 Least Privilege partial match

Least privilege reduces the permissions available to any process that could be subverted by injected commands.

CM-7 Least Functionality partial match

Least functionality restricts available OS commands and interpreters, limiting the blast radius of injection.

SA-8 Security and Privacy Engineering Principles partial match

Secure engineering principles require proper neutralization of untrusted input before command construction.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
blocks

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
blocks

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References