CVE-2026-5981
Received Received - Intake
Buffer Overflow in D-Link DIR-605L POST Request Handler

Publication date: 2026-04-09

Last updated on: 2026-04-30

Assigner: VulDB

Description
A vulnerability has been found in D-Link DIR-605L 2.13B01. This affects the function formAdvFirewall of the file /goform/formAdvFirewall of the component POST Request Handler. Such manipulation of the argument curTime leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
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Meta Information
Published
2026-04-09
Last Modified
2026-04-30
Generated
2026-06-16
AI Q&A
2026-04-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-5981
EUVD
EUVD-2026-21189
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
dlink dir-605l_firmware 2.13b01
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-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
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Executive Summary

This vulnerability exists in the D-Link DIR-605L router, specifically in the formAdvFirewall function of the /goform/formAdvFirewall component which handles POST requests.

The issue arises due to improper handling of the argument 'curTime', which can be manipulated to cause a buffer overflow.

A buffer overflow occurs when more data is written to a buffer than it can hold, potentially allowing an attacker to execute arbitrary code or crash the device.

This vulnerability can be exploited remotely, meaning an attacker does not need physical access to the device to launch an attack.

The affected products are no longer supported by the maintainer, which means no official patches or fixes are available.

Impact Analysis

Exploitation of this vulnerability can lead to a buffer overflow, which may allow an attacker to execute arbitrary code on the affected device.

This could result in unauthorized control over the router, potentially allowing the attacker to intercept, modify, or disrupt network traffic.

Such control could lead to network downtime, data breaches, or use of the device as a launch point for further attacks within the network.

Since the device is no longer supported, there is no official fix, increasing the risk and impact of exploitation.

Mitigation Strategies

The affected product, D-Link DIR-605L 2.13B01, is no longer supported by the maintainer.

Since the vulnerability allows remote exploitation via a buffer overflow in the formAdvFirewall function, immediate mitigation steps include discontinuing use of the affected device or isolating it from untrusted networks to prevent remote attacks.

Consider replacing the device with a supported model that receives security updates.

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