Cyber Resilience

CVE-2023-33530

RCE in Tenda G103 Firmware 1.0.0.5

RCECommand Injection
Published
06 June 2023
Modified
09 July 2026
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.013 68th percentile
Risk Priority 71 floored blend · peak EPSS

Summary

CVE-2023-33530 is a high-severity Command Injection (CWE-77) vulnerability in Tenda G103 Firmware. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 32% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

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

The vulnerability CVE-2023-33530 is a command injection flaw tracked under CWE-77 that affects the Tenda G103 Gigabit GPON Terminal running firmware version V1.0.0.5. It received a CVSS 3.1 score of 8.8, driven by network attack vector, low complexity, and high impact on confidentiality, integrity, and availability.

An attacker who first obtains web management privileges can inject operating-system commands through the management interface, resulting in the ability to spawn a shell and execute arbitrary code on the device.

Public references consist of the vendor site and a GitHub repository containing a proof-of-concept PDF that demonstrates the remote code execution path; no vendor advisory or patch information is supplied in these sources. The associated EPSS score has remained flat at 0.0688 with no material rise after disclosure.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

There is a command injection vulnerability in the Tenda G103 Gigabit GPON Terminal with firmware version V1.0.0.5. If an attacker gains web management privileges, they can inject commands gaining shell privileges.

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-2023-27079Same product: Tenda G103
CVE-2026-5339Same product: Tenda G103
CVE-2026-5338Same product: Tenda G103
CVE-2023-27076Same product: Tenda G103
CVE-2024-30637Same vendor: Tenda
CVE-2023-50989Same vendor: Tenda
CVE-2026-38835Same vendor: Tenda
CVE-2023-30353Same vendor: Tenda
CVE-2024-34338Same vendor: Tenda
CVE-2023-49435Same vendor: Tenda

Affected Assets

tenda
g103 firmware
1.0.0.5

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