CVE-2023-39471

Root code execution via unsanitized ated_tp input

Published May 3, 2024 · Updated Aug 2, 2024

OS command injection in TP-Link TL-WR840N and TL-WR841N firmware allows network-adjacent attackers to execute code as root. The ated_tp service passes a user-supplied string to a system call without proper validation, allowing command syntax to alter the invoked operation. Access from an adjacent network is sufficient, requires no authentication or user interaction, and grants full control in the router's root context.

CVSS severity7.5
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in TP-Link TL-WR840N and TL-WR841N firmware allows network-adjacent attackers to execute code as root. The ated_tp service passes a user-supplied string to a system call without proper validation, allowing command syntax to alter the invoked operation. Access from an adjacent network is sufficient, requires no authentication or user interaction, and grants full control in the router's root context.

The record

CVE
CVE-2023-39471
Published
May 3, 2024
Updated
Aug 2, 2024
Vendor
TP-Link
Product
TL-WR840N
Classifications
CWE-78, T1059
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <6.2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TP-Link · TL-WR840Nversion=0 <6.2
TP-Link · TL-WR841Nversion=0 <14; version=4.19

Published CVSS scores

7.5Zero Day InitiativeCVSS:3.0/AV:A/AC:H/PR:N/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
Privilegesunauthenticated
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

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Your stack

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