CVE-2023-39935

Authenticated arbitrary OS command execution

Published Sep 6, 2023 · Updated Sep 26, 2024

OS command injection in TP-Link Archer C5400 firmware before 230506 allows remote authenticated users to execute arbitrary OS commands. Public advisories do not identify the vulnerable interface, parameter, or command-construction operation that mishandles input. A logged-in user must reach the router from an adjacent network; successful exploitation executes commands with the 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 Archer C5400 firmware before 230506 allows remote authenticated users to execute arbitrary OS commands. Public advisories do not identify the vulnerable interface, parameter, or command-construction operation that mishandles input. A logged-in user must reach the router from an adjacent network; successful exploitation executes commands with the firmware's privileges.

The record

CVE
CVE-2023-39935
Published
Sep 6, 2023
Updated
Sep 26, 2024
Vendor
TP-Link
Product
Archer C5400
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 'Archer C5400(JP)_V2_230506'

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

TP-Link · Archer C5400version=firmware versions prior to 'Archer C5400(JP)_V2_230506'
TP-Link · Archer C5400 Firmwareversion=v2.230506

Published CVSS scores

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