Buffer Overflow in D-Link DI-8100 Affects HTTP Handler Functionality
CVE-2026-7853

9.3CRITICAL

Key Information:

Vendor

D-link
Status
Di-8100
Vendor
CVE Published:
5 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7853?

A vulnerability exists in the D-Link DI-8100 router's HTTP handler, specifically in the 'sprintf' function within the '/auto_reboot.asp' file. The flaw arises from improper handling of input parameters, which can lead to a buffer overflow condition. An attacker can exploit this vulnerability remotely, potentially compromising the system's integrity and availability. Exploit code is publicly available, making it critical for affected systems to be updated or secured to prevent unauthorized access.

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-2026-7853 - Proof of Concept

References

https://vuldb.com/vuln/361130
vdb-entrytechnical-description
https://vuldb.com/vuln/361130/cti
signaturepermissions-required
https://vuldb.com/submit/807837
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)
.