Security Resilience

CVE-2023-4411

Command Injection in Totolink Ex1200L Firmware 9.3.5u.6146_b20201023

Public PoCCommand Injection
Published
18 August 2023
Modified
21 November 2024
CVSS Score v3.1 6.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.052 92th percentile
Risk Priority 56 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-2023-4411 is a medium-severity OS Command Injection (CWE-78) vulnerability in Totolink Ex1200L Firmware. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

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 has been identified in the TOTOLINK EX1200L wireless range extender running firmware EN_V9.3.5u.6146_B20201023. The issue resides in the setTracerouteCfg function, where improper handling of user-supplied input enables OS command injection, tracked under CWE-78. The flaw is remotely triggerable without user interaction and carries a CVSS 3.1 base score of 6.3.

An authenticated attacker with network access can supply crafted parameters to the affected function, resulting in arbitrary command execution on the device. Public exploit code has been released, allowing an adversary to leverage the injection to potentially alter device configuration, exfiltrate data, or pivot within the local network.

The EPSS score for this CVE rose from a low baseline to a peak of 0.0645 on 2025-01-22 before receding to its current value of 0.0107, indicating that exploitation interest increased well after the 2023 disclosure. No vendor patch or mitigation guidance has been issued, as the manufacturer did not respond to early disclosure attempts.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

A vulnerability has been found in TOTOLINK EX1200L EN_V9.3.5u.6146_B20201023 and classified as critical. This vulnerability affects the function setTracerouteCfg. The manipulation leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed to the public…

more

and may be used. VDB-237514 is the identifier assigned to this vulnerability. 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-2023-4410Same product: Totolink Ex1200L
CVE-2023-51035Same product: Totolink Ex1200L
CVE-2023-4412Same product: Totolink Ex1200L
CVE-2023-51033Same product: Totolink Ex1200L
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-2024-32351Same vendor: Totolink

Affected Assets

totolink
ex1200l firmware
9.3.5u.6146_b20201023

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

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

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