CVE-2026-96891
Received Received - Intake

Out-of-Bounds Write in D-Link DIR-825 via rp-l2tp

Vulnerability report for CVE-2026-96891, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: VulDB

Description

A vulnerability was identified in D-Link DIR-825 3.00b32. Affected is the function tunnel_set_params of the file tunnel.c of the component rp-l2tp. The manipulation of the argument peer_hostname  leads to out-of-bounds write. The attack may be initiated remotely.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
d-link dir-825 3.00b32

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

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Executive Summary

This vulnerability is an out-of-bounds write flaw in D-Link DIR-825 3.00b32. It exists in the tunnel_set_params function of the rp-l2tp component's tunnel.c file. The issue is triggered by manipulating the peer_hostname argument, which can lead to memory corruption.

Detection Guidance

This vulnerability affects D-Link DIR-825 devices running firmware version 3.00b32, specifically in the rp-l2tp component. Detection requires checking the firmware version of the device. Logs or network traffic analysis may reveal exploitation attempts targeting the tunnel_set_params function.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary code or cause a denial of service by sending specially crafted network traffic. It could lead to unauthorized access, data theft, or system crashes on affected devices.

Compliance Impact

This vulnerability involves an out-of-bounds write in the D-Link DIR-825 router's rp-l2tp component, which could allow remote attackers to execute arbitrary code or cause denial of service. Such vulnerabilities may lead to unauthorized access to sensitive data, potentially violating GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

Immediately update the D-Link DIR-825 firmware to the latest version to patch the vulnerability in the rp-l2tp component. Disable remote access to the router's administration interface if not required. Monitor network traffic for unusual activity related to the tunnel.c function or peer_hostname parameter.

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