CVE-2026-113744
Deferred Deferred - Pending Action

Stack-Based Buffer Overflow in Tenda AC19 Router

Vulnerability report for CVE-2026-113744, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-21

Last updated on: 2026-10-28

Assigner: VulDB

Description

A security vulnerability has been detected in Tenda AC19 16.03.10.07. The impacted element is the function formSetFirewallCfg of the file /goform/SetFirewallCfg of the component httpd Web Management Service. Such manipulation of the argument firewallEn leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-21
Last Modified
2026-10-28
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Tenda AC19 16.03.10.07

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a stack-based buffer overflow in Tenda AC19 version 16.03.10.07. It occurs in the httpd Web Management Service, specifically in the function formSetFirewallCfg via the /goform/SetFirewallCfg endpoint. The issue arises from improper handling of the firewallEn argument, allowing remote attackers to trigger a buffer overflow.

Detection Guidance

To detect this vulnerability, check if your Tenda AC19 device is running firmware version 16.03.10.07. You can verify this by accessing the device's web interface or using network scanning tools to identify the firmware version. Additionally, monitor network traffic for unusual activity targeting the /goform/SetFirewallCfg endpoint.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary code on the device, potentially leading to full system compromise. Attackers could gain control over the router, intercept network traffic, or use it as a foothold for further attacks within the network.

Compliance Impact

This vulnerability, a stack-based buffer overflow in Tenda AC19's httpd Web Management Service, could lead to unauthorized remote code execution. Such flaws may violate compliance requirements under GDPR (data protection) and HIPAA (health data security) by enabling unauthorized access to sensitive information or system control.

Mitigation Strategies

Immediately update the Tenda AC19 firmware to the latest version available from the official Tenda website. If an update is not available, consider isolating the device from the network or disabling the httpd Web Management Service to prevent remote exploitation. Ensure firewall rules are in place to restrict access to the /goform/SetFirewallCfg endpoint.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-113744. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...