CVE-2026-86509
Received Received - Intake

Stack-Based Buffer Overflow in D-Link DIR-895L A1 Firmware

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: VulDB

Description
A flaw has been found in D-Link DIR-895L A1_102b07. This impacts the function sendOffer/sendACK of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack can only be done within the local network. The exploit has been published and may be used.

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Meta Information

Published
2026-09-08
Last Modified
2026-09-08
Generated
2026-09-08
AI Q&A
2026-09-08
EPSS Evaluated
N/A
NVD
CVE-2026-86509
EUVD
EUVD-2026-72608

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
d-link dir-895l a1_102b07

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

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Executive Summary

This vulnerability is a stack-based buffer overflow in D-Link DIR-895L A1_102b07. It exists in the sendOffer/sendACK function of the udhcpcd/serverpacket.c component. An attacker within the local network can exploit this to cause a buffer overflow, potentially leading to arbitrary code execution or system crashes.

Detection Guidance

This vulnerability affects D-Link DIR-895L routers and is exploitable within the local network. Detection involves checking for unusual network traffic or signs of stack-based buffer overflow attempts targeting the udhcpcd service. Monitor logs for crashes or anomalies in the router's DHCP handling. No specific commands are provided in the context.

Impact Analysis

An attacker within your local network could exploit this flaw to execute malicious code on your router, gain unauthorized access, or disrupt network services. This may lead to data theft, device compromise, or denial of service affecting your network operations.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance penalties, legal liabilities, and reputational damage if exploited due to inadequate network security controls.

Mitigation Strategies

Immediately update the firmware of the D-Link DIR-895L router to the latest version to patch the stack-based buffer overflow vulnerability in the udhcpcd component. If no update is available, consider replacing the device as it is impacted by a published exploit.

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