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EPSS 4.6%top 9.6%

CVE-2026-7856: Buffer Overflow in D-Link DI-8100

0
High
VulnerabilityCVE-2026-7856cvecve-2026-7856
Published: Tue May 05 2026 (05/05/2026, 19:00:14 UTC)
Source: CVE Database V5
Vendor/Project: D-Link
Product: DI-8100

Description

A flaw has been found in D-Link DI-8100 16.07.26A1. This affects an unknown part of the file /url_member.asp of the component Web Management Interface. Executing a manipulation of the argument Name can lead to buffer overflow. The attack can be launched remotely. The exploit has been published and may be used.

CVSS v4.0

Score 8.6high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Affected software

Affected versions
=16.07.26

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/05/2026, 19:51:30 UTC

Technical Analysis

This vulnerability involves a buffer overflow in the D-Link DI-8100 router's web management interface component, located in the /url_member.asp file. Manipulating the 'Name' argument remotely can cause the overflow, potentially leading to arbitrary code execution or denial of service. The CVSS 4.0 base score is 8.6, reflecting high severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The vulnerability is publicly known and an exploit is available, but no official fix or mitigation has been disclosed by D-Link.

Potential Impact

Successful exploitation of this vulnerability could allow a remote attacker to cause a buffer overflow, potentially leading to arbitrary code execution or denial of service on the affected device. Given the network attack vector and no required user interaction, the risk is significant for exposed devices running the vulnerable firmware version. However, there are no confirmed reports of active exploitation in the wild.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or workaround has been published, users should monitor D-Link's advisories closely. As a precaution, restrict access to the device's web management interface from untrusted networks until a patch is available.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-05-05T11:41:27.815Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 69fa46b8cbff5d86101fa005

Added to database: 5/5/2026, 7:36:24 PM

Last enriched: 5/5/2026, 7:51:30 PM

Last updated: 6/20/2026, 8:43:11 AM

Views: 76

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