Description
A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the custom_error parameter in the /user.asp endpoint.
Published: 2026-04-08
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution via Buffer Overflow
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is a stack-based buffer overflow caused by improper handling of the custom_error parameter in the /user.asp endpoint. An attacker could send a crafted HTTP request that overflows the stack, potentially allowing execution of arbitrary code on the device. This flaw threatens confidentiality, integrity, and availability of the device and any systems it serves.

Affected Systems

The affected product is the D-Link DI-8003 wireless router running firmware 16.07.26A1. The vulnerability is documented for this specific firmware version and is identifiable via the provided CPE entries for the device and its firmware.

Risk and Exploitability

The CVSS score is 7.5, indicating high severity, while the EPSS score is below 1%, suggesting a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. The likely attack vector is remote, via the web interface, and requires only an unauthenticated HTTP request to /user.asp.

Generated by OpenCVE AI on April 13, 2026 at 15:24 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the device firmware to a version newer than 16.07.26A1 that contains the fix.
  • If an update is not immediately available, disable remote access to the /user.asp endpoint or block inbound traffic to the device’s web interface using a firewall.
  • Monitor the device’s logs for attempts to access /user.asp with anomalous parameter values.

Generated by OpenCVE AI on April 13, 2026 at 15:24 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 22 Apr 2026 16:00:00 +0000

Type Values Removed Values Added
References

Tue, 14 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in D-Link DI-8003 /user.asp Custom Error Parameter

Mon, 13 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in Custom Error Parameter Handling of D-Link DI-8003 /user.asp Endpoint
Weaknesses CWE-120

Fri, 10 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Dlink
Dlink di-8003
Dlink di-8003 Firmware
CPEs cpe:2.3:h:dlink:di-8003:-:*:*:*:*:*:*:*
cpe:2.3:o:dlink:di-8003_firmware:16.07.26a1:*:*:*:*:*:*:*
Vendors & Products Dlink
Dlink di-8003
Dlink di-8003 Firmware

Fri, 10 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-121
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared D-link
D-link di-8003
Vendors & Products D-link
D-link di-8003

Wed, 08 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
Title Buffer Overflow in Custom Error Parameter Handling of D-Link DI-8003 /user.asp Endpoint
Weaknesses CWE-120

Wed, 08 Apr 2026 18:30:00 +0000

Type Values Removed Values Added
Description A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1 due to improper handling of the custom_error parameter in the /user.asp endpoint.
References

Subscriptions

D-link Di-8003
Dlink Di-8003 Di-8003 Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-22T15:37:14.941Z

Reserved: 2025-06-16T00:00:00.000Z

Link: CVE-2025-50659

cve-icon Vulnrichment

Updated: 2026-04-10T17:42:54.274Z

cve-icon NVD

Status : Modified

Published: 2026-04-08T19:24:16.470

Modified: 2026-04-22T16:16:50.730

Link: CVE-2025-50659

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-14T16:40:29Z

Weaknesses