CVE-2023-31814Network attack vector

Unauthenticated file inclusion via incorrect reference resolution

Published May 23, 2023 · Updated Jan 17, 2025

File inclusion in D-Link DIR-300 firmware REVA1.06 and earlier and REVB2.06 and earlier allows remote attackers to include unintended files. The /model/__lang_msg.php endpoint resolves an attacker-controlled file reference outside its intended resource scope. No credentials or user interaction are required; public records do not identify the parameter or establish whether inclusion permits code execution.

CVSS severity9.8
Critical
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File inclusion in D-Link DIR-300 firmware REVA1.06 and earlier and REVB2.06 and earlier allows remote attackers to include unintended files. The /model/__lang_msg.php endpoint resolves an attacker-controlled file reference outside its intended resource scope. No credentials or user interaction are required; public records do not identify the parameter or establish whether inclusion permits code execution.

The record

CVE
CVE-2023-31814
Published
May 23, 2023
Updated
Jan 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-706, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-706Use of Incorrectly-Resolved Name or Reference
T1190Exploit Public-Facing Application

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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