CVE-2025-11325

Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-10-06

Last updated on: 2026-02-24

Assigner: VulDB

Description

A security flaw has been discovered in Tenda AC18 15.03.05.19(6318). Affected by this issue is some unknown functionality of the file /goform/fast_setting_pppoe_set. Performing a manipulation of the argument Username results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-06

Last Modified

2026-02-24

Generated

2026-07-06

AI Q&A

2025-10-06

EPSS Evaluated

2026-07-05

NVD

CVE-2025-11325

Affected Vendors & Products

Vendor	Product	Version / Range
tenda	ac18_firmware	15.03.05.19\(6318\)
tenda	ac18	*

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 Tenda AC18 router firmware version 15.03.05.19(6318). It occurs due to improper handling of the 'Username' parameter in the HTTP request to the endpoint /goform/fast_setting_pppoe_set. An attacker can send a specially crafted request that causes the buffer allocated on the stack to overflow, potentially leading to device compromise. The exploit can be carried out remotely without authentication. [1, 2]

Impact Analysis

Exploitation of this vulnerability can compromise the confidentiality, integrity, and availability of the affected Tenda AC18 router. Since the attack can be performed remotely without authentication, an attacker could gain control over the device, disrupt network services, or use the device as a foothold for further attacks. [2]

Detection Guidance

This vulnerability can be detected by monitoring HTTP requests to the endpoint /goform/fast_setting_pppoe_set for suspicious or unusually long Username parameter values that could trigger a stack-based buffer overflow. Network intrusion detection systems (NIDS) can be configured to alert on such anomalous requests. Specific commands are not provided in the available resources. [1, 2]

Mitigation Strategies

Immediate mitigation steps include replacing the affected Tenda AC18 device with an alternative product, as no known mitigations or countermeasures have been identified. Additionally, restricting remote access to the device and monitoring for exploit attempts may reduce risk until replacement is possible. [2]

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