CVE-2023-40193

Authenticated OS command execution via undisclosed injection

Published Sep 6, 2023 · Updated Sep 26, 2024

OS command injection in TP-Link Deco M4 firmware before 1.5.8 Build 20230619 allows remote authenticated users to execute arbitrary commands. The published CNA and JPCERT/CC records do not identify the affected request, parameter, or command-building operation that mishandles input. Exploitation requires an authenticated user on an adjacent network and grants command execution with the affected firmware's privileges.

CVSS severity8.0
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in TP-Link Deco M4 firmware before 1.5.8 Build 20230619 allows remote authenticated users to execute arbitrary commands. The published CNA and JPCERT/CC records do not identify the affected request, parameter, or command-building operation that mishandles input. Exploitation requires an authenticated user on an adjacent network and grants command execution with the affected firmware's privileges.

The record

CVE
CVE-2023-40193
Published
Sep 6, 2023
Updated
Sep 26, 2024
Vendor
TP-Link
Product
Deco M4
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=firmware versions prior to 'Deco M4(JP)_V2_1.5.8 Build 20230619'
  2. Affected versionversion=v2._1.5.8_build_20230619

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

TP-Link · Deco M4version=firmware versions prior to 'Deco M4(JP)_V2_1.5.8 Build 20230619'; version=v2._1.5.8_build_20230619

Published CVSS scores

8.0JPCERT/CCCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo