Cyber Resilience

CVE-2023-24156

RCE in Totolink T8 Firmware v4.1.5cu

Public PoCRCECommand Injection
Published
03 February 2023
Modified
26 March 2025
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.021 80th percentile
Risk Priority 82 floored blend · peak EPSS

Summary

CVE-2023-24156 is a critical-severity Command Injection (CWE-77) vulnerability in Totolink T8 Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 20% 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.

CVE-2023-24156 is a command injection vulnerability in the ip parameter of the recvSlaveUpgstatus function within TOTOLINK T8 firmware version 4.1.5cu. The issue, tracked under CWE-77, allows arbitrary commands to be executed when the device processes a crafted MQTT packet.

The flaw is remotely exploitable by unauthenticated attackers over the network without user interaction. With a CVSS 3.1 score of 9.8, successful exploitation grants complete control over the affected device, resulting in full impacts to confidentiality, integrity, and availability.

The EPSS score has remained flat at 0.1638 with no material rise after disclosure. Public references consist of technical proof-of-concept details hosted on GitHub but contain no vendor advisories or patch information.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

A command injection vulnerability in the ip parameter in the function recvSlaveUpgstatus of TOTOLINK T8 V4.1.5cu allows attackers to execute arbitrary commands via a crafted MQTT packet.

CWE(s)
CWE-77

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1059.008 Network Device CLI Execution
Adversaries may abuse scripting or built-in command line interpreters (CLI) on network devices to execute malicious command and payloads.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-24151Same product: Totolink T8
CVE-2023-24157Same product: Totolink T8
CVE-2023-24154Same product: Totolink T8
CVE-2023-24152Same product: Totolink T8
CVE-2023-24150Same product: Totolink T8
CVE-2023-24153Same product: Totolink T8
CVE-2024-8574Same product: Totolink T8
CVE-2024-8075Same product: Totolink T8
CVE-2024-8077Same product: Totolink T8
CVE-2024-46419Same product: Totolink T8

Affected Assets

totolink
t8 firmware
v4.1.5cu

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)
  • V1.2.3
  • V1.2.5
  • V1.2.8
  • V1.2.9

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
prevents

Secure SDLC practices directly require input validation and neutralization that prevent command injection.

DE.CM-09 partial match
prevents

Runtime monitoring of software and data can detect anomalous command execution resulting from injection.

ID.RA-01 partial match
prevents

Identifying recorded vulnerabilities enables remediation of command-injection flaws before exploitation.

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.8.28 Secure coding mostly match
prevents

Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches command-injection vulnerabilities before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and command construction practices that directly prevent command injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection flaws including command injection.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the attack surface but do not prescribe the specific neutralization techniques needed.

A.8.31 Separation of development, test and production environments none match
none

Environment separation limits the blast radius of an exploited command injection but does not prevent the flaw itself.

References