CVE-2023-5154Public exploitNetwork attack vector

Authenticated code execution via unrestricted logo upload

Published Sep 25, 2023 · Updated Aug 2, 2024

Unrestricted upload in D-Link DAR-8000 20151231 allows remote authenticated users to execute PHP through a crafted logo upload. The /sysmanage/changelogo.php handler accepts a file_upload part containing PHP and stores it beneath the web-accessible /boot/web/upload/diylogo path without restricting its type. A valid PHP session is required, and successful exploitation executes uploaded code with the appliance server's privileges.

CVSS severity8.8
High
EPSS probability15.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted upload in D-Link DAR-8000 20151231 allows remote authenticated users to execute PHP through a crafted logo upload. The /sysmanage/changelogo.php handler accepts a file_upload part containing PHP and stores it beneath the web-accessible /boot/web/upload/diylogo path without restricting its type. A valid PHP session is required, and successful exploitation executes uploaded code with the appliance server's privileges.

The record

CVE
CVE-2023-5154
Published
Sep 25, 2023
Updated
Aug 2, 2024
Vendor
D-Link
Product
DAR-8000
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2023CVE 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=20151231
  2. Affected versionversion=2015-12-31

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DAR-8000version=20151231; version=2015-12-31

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

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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