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D-Link DI-8100 CVE-2026-7851

| EUVD-2026-27416 HIGH
Stack-based Buffer Overflow (CWE-121)
2026-05-05 VulDB GHSA-x4pj-ppv6-g6w7
7.3
CVSS 4.0
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CVSS VectorNVD

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
May 05, 2026 - 18:30 vuln.today
CVSS changed
May 05, 2026 - 18:22 NVD
7.2 (HIGH) 7.3 (HIGH)

DescriptionNVD

A vulnerability was identified in D-Link DI-8100 16.07.26A1. This affects the function sprintf of the file yyxz.asp. The manipulation of the argument ID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.

AnalysisAI

Stack-based buffer overflow in D-Link DI-8100 router firmware 16.07.26A1 allows authenticated remote attackers with high privileges to execute arbitrary code via malformed ID parameter to yyxz.asp administrative interface. Public exploit code exists on GitHub, demonstrating reliable exploitation. …

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RemediationAI

Within 24 hours: Identify all D-Link DI-8100 routers running firmware 16.07.26A1 in production and document their network location and administrative access controls. Within 7 days: Restrict administrative access to these devices to a minimal set of named administrators, enforce multi-factor authentication if supported, and segregate administrative management traffic to a protected network. …

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CVE-2026-7851 vulnerability details – vuln.today

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