BaseFortify

Publication date: 2025-11-14

Last updated on: 2025-11-20

Assigner: VulDB

Description

A vulnerability was detected in D-Link DIR-816L 2_06_b09_beta. Affected by this vulnerability is the function authenticationcgi_main of the file /authentication.cgi. Performing manipulation of the argument Password results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

CVSS Scores

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Meta Information

Published

2025-11-14

Last Modified

2025-11-20

Generated

2026-07-06

AI Q&A

2025-11-15

EPSS Evaluated

2026-07-05

NVD

CVE-2025-13188

Affected Vendors & Products

Vendor	Product	Version / Range
dlink	dir-816l_firmware	2.06.b09
dlink	dir-816l	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
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).
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

Executive Summary

This vulnerability is a stack-based buffer overflow in the authenticationcgi_main function of the /authentication.cgi file on the D-Link DIR-816L 2_06_b09_beta device. It occurs when the Password argument is manipulated, allowing an attacker to remotely exploit the device by overflowing the stack buffer.

Impact Analysis

The vulnerability allows remote attackers to execute arbitrary code or cause a denial of service by exploiting the stack-based buffer overflow. This can lead to full compromise of the affected device, potentially allowing unauthorized access and control.

Mitigation Strategies

Since the affected products are no longer supported by the maintainer and the exploit is public, immediate mitigation steps include isolating the vulnerable device from the network, disabling remote access to the /authentication.cgi interface if possible, and replacing the device with a supported and patched model to prevent exploitation.

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