CVE-2021-31658

Name: CVE-2021-31658
Creator: NVD / NIST
Published: 2021-06-10T15:15:09.42+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.06%

Last modified Jun 17, 2026

CVE-2021-31658 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. TP-Link TL-SG2005, TL-SG2008, etc. 1.0.0 Build 20180529 Rel.40524 is affected by an Array index error. EPSS estimates a 1.06% chance of exploitation in the next 30 days.

Description

TP-Link TL-SG2005, TL-SG2008, etc. 1.0.0 Build 20180529 Rel.40524 is affected by an Array index error. The interface that provides the "device description" function only judges the length of the received data, and does not filter special characters. This vulnerability will cause the application to crash, and all device configuration information will be erased.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.06%

60.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-129

Affected Software

Vendor	Product	Versions	Update
Tp-Link	Tl-Sg2005 Firmware	1.0.0	Build 20180529 Rel.40524
Tp-Link	Tl-Sg2008 Firmware	1.0.0	Build 20180529 Rel.40524

References

http://tp-link.comVendor Advisory
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-31658Exploit, Third Party Advisory
http://tp-link.comVendor Advisory
https://github.com/liyansong2018/CVE/tree/main/2021/CVE-2021-31658Exploit, Third Party Advisory

Timeline

Published: Jun 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31658?

How severe is CVE-2021-31658?

CVE-2021-31658 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31658?

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-2021-31658?

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

Scan your code now

Source: NVD / NIST