CVE-2021-45997

Name: CVE-2021-45997
Creator: NVD / NIST
Published: 2022-02-04T02:15:09.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2021-45997 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formSetPortMapping. This vulnerability allows attackers to cause a Denial of Service (DoS) via the portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, and portMappingExternal parameters.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a stack overflow in the function formSetPortMapping. This vulnerability allows attackers to cause a Denial of Service (DoS) via the portMappingServer, portMappingProtocol, portMappingWan, porMappingtInternal, and portMappingExternal parameters.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.04%

59.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Tendacn	G1 Firmware	15.11.0.17\(9502\)_cn
Tendacn	G3 Firmware	15.11.0.17\(9502\)_cn

References

https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_11/11.mdBroken Link, Third Party Advisory
https://github.com/pjqwudi/my_vuln/blob/main/Tenda/vuln_11/11.mdBroken Link, Third Party Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45997?

How severe is CVE-2021-45997?

CVE-2021-45997 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45997?

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-2021-45997?

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

Scan your code now

Source: NVD / NIST