CVE-2021-46263

Name: CVE-2021-46263
Creator: NVD / NIST
Published: 2022-02-15T20:15:07.587+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.71%

Last modified Jun 17, 2026

CVE-2021-46263 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow in the wifiTime module. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data.. EPSS estimates a 1.71% chance of exploitation in the next 30 days.

Description

Tenda AC Series Router AC11_V02.03.01.104_CN was discovered to contain a stack buffer overflow in the wifiTime module. This vulnerability allows attackers to cause a Denial of Service (DoS) via crafted overflow data.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.71%

74.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Tenda	Ac11 Firmware	02.03.01.104_cn

References

https://github.com/Ainevsia/CVE-Request/tree/main/Tenda/11Exploit, Third Party Advisory
https://github.com/Ainevsia/CVE-Request/tree/main/Tenda/11Exploit, Third Party Advisory

Timeline

Published: Feb 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46263?

How severe is CVE-2021-46263?

CVE-2021-46263 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.71% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46263?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46263?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST