Buffer Overflow in D-Link DI-8100 Affects CGI Endpoint Functionality
CVE-2026-7248

9.3CRITICAL

Key Information:

Vendor

D-link
Status
Di-8100
Vendor
CVE Published:
28 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7248?

A buffer overflow vulnerability exists in the CGI endpoint of D-Link DI-8100 version 16.07.26A1. Specifically, the flaw is in the function tgfile_htm located in the tgfile.htm file. Attackers may exploit this vulnerability remotely by manipulating the 'fn' argument, leading to potential application crashes or the execution of arbitrary code. This exploit has already been publicly disclosed, amplifying the necessity for immediate patching to mitigate associated risks.

Affected Version(s)

DI-8100 16.07.26A1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7248 - Proof of Concept

References

https://vuldb.com/vuln/359857
vdb-entrytechnical-description
https://vuldb.com/vuln/359857/cti
signaturepermissions-required
https://vuldb.com/submit/802869
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

draw (VulDB User)
.