Which versions of D-Link DI-8100 are affected by EUVD-2026-27430?

CVE-2026-7854 is a critical remote code execution vulnerability affecting D-Link DI-8100 network appliances (firmware 16.07.26A1) that allows unauthenticated attackers to execute arbitrary code and…

Is there a public PoC exploit available for EUVD-2026-27430?

Yes, a public proof-of-concept exploit is available for EUVD-2026-27430. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate EUVD-2026-27430?

Within 24 hours: Inventory all D-Link DI-8100 devices and verify firmware version (16.07.26A1 and prior versions). Restrict network access to the device's web interface (/url_rule.asp) using firewall rules or network segmentation-allow only trusted administrative IPs. Within 7 days: Check D-Link security advisories for patch availability; if released, schedule immediate firmware updates across all affected devices in a controlled testing environment first. Within 30 days: If no patch is released, evaluate replacement with alternative equipment from vendors with active security support, or implement air-gapped network isolation as a permanent mitigation.

D-Link DI-8100 EUVD-2026-27430

Q: What is the CVSS score of EUVD-2026-27430?

EUVD-2026-27430 has a CVSS 4.0 base score of 8.9 (High). CVSS vector: 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. EPSS exploitation probability: 0.1%.

| CVE-2026-7854 HIGH

Classic Buffer Overflow (CWE-120)

2026-05-05 VulDB

GHSA-5w9m-8h62-42jw

Buffer Overflow D-Link

8.9

CVSS 4.0

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

Lifecycle Timeline

Re-analysis Queued

May 05, 2026 - 19:22 vuln.today

cvss_changed

Severity Changed

May 05, 2026 - 19:22 NVD

CRITICAL HIGH

CVSS changed

May 05, 2026 - 19:22 NVD

9.8 (CRITICAL) 8.9 (HIGH)

Analysis Generated

May 05, 2026 - 19:01 vuln.today

DescriptionNVD

A security vulnerability has been detected in D-Link DI-8100 16.07.26A1. Affected by this vulnerability is the function url_rule_asp of the file /url_rule.asp of the component POST Parameter Handler. Such manipulation leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

AnalysisAI

Remote unauthenticated buffer overflow in D-Link DI-8100 firmware 16.07.26A1 enables attackers to execute arbitrary code, compromise device integrity, and cause denial of service via crafted POST requests to /url_rule.asp. Public exploit code is available on GitHub, significantly lowering the barrier to exploitation. …

RemediationAI

Within 24 hours: Inventory all D-Link DI-8100 devices and verify firmware version (16.07.26A1 and prior versions). Restrict network access to the device's web interface (/url_rule.asp) using firewall rules or network segmentation-allow only trusted administrative IPs. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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EUVD-2026-27430 vulnerability details – vuln.today

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D-Link DI-8100 EUVD-2026-27430

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D-Link DI-8100 EUVD-2026-27430

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External POC / Exploit Code