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D-Link DI-8100 CVE-2026-7853

| EUVD-2026-27418 HIGH
Classic Buffer Overflow (CWE-120)
2026-05-05 VulDB GHSA-mrhg-43m6-jq5j
Buffer Overflow D-Link
8.9
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
May 05, 2026 - 18:30 vuln.today
Severity Changed
May 05, 2026 - 18:22 NVD
CRITICAL HIGH
CVSS changed
May 05, 2026 - 18:22 NVD
9.8 (CRITICAL) 8.9 (HIGH)

DescriptionNVD

A weakness has been identified in D-Link DI-8100 16.07.26A1. Affected is the function sprintf of the file /auto_reboot.asp of the component HTTP Handler. This manipulation of the argument enable/time causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

Buffer overflow in D-Link DI-8100 router firmware 16.07.26A1 allows remote unauthenticated attackers to execute arbitrary code via crafted HTTP requests to /auto_reboot.asp. The vulnerability exploits unsafe sprintf calls handling the 'enable' and 'time' parameters in the auto-reboot feature's HTTP handler. …

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RemediationAI

Within 24 hours: Identify all D-Link DI-8100 devices on the network and document firmware versions via administrative access or network scanning; isolate any devices running firmware 16.07.26A1 from production networks if possible. Within 7 days: Contact D-Link support to determine if a patched firmware version exists beyond 16.07.26A1, and test any available firmware updates in a controlled environment; implement network segmentation to restrict HTTP access to the /auto_reboot.asp endpoint via firewall rules. …

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CVE-2026-7853 vulnerability details – vuln.today
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