CVE-2025-13446
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Vulnerability report for CVE-2025-13446, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2025-11-20

Last updated on: 2025-11-21

Assigner: VulDB

Description

A vulnerability has been found in Tenda AC21 16.03.08.16. This vulnerability affects unknown code of the file /goform/SetSysTimeCfg. The manipulation of the argument timeZone/time leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

CVSS Scores

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Meta Information

Published
2025-11-20
Last Modified
2025-11-21
Generated
2026-07-07
AI Q&A
2025-11-20
EPSS Evaluated
2026-07-05
NVD

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
tenda ac21_firmware 16.03.08.16
tenda ac21 *

Helpful Resources

Exploitability

CWE
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KEV
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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

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Executive Summary

This vulnerability is a stack-based buffer overflow in the Tenda AC21 router firmware version 16.03.08.16, specifically in the /goform/SetSysTimeCfg file. It occurs due to improper handling of the timeZone/time argument, allowing an attacker to remotely exploit the device by sending crafted input that overflows the stack buffer.

Impact Analysis

Exploiting this vulnerability can allow a remote attacker to execute arbitrary code on the affected device, potentially leading to full control over the router. This can result in disruption of network services, interception or manipulation of network traffic, and compromise of connected devices.

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