CVE-2026-2872

Name: CVE-2026-2872
Creator: NVD / NIST
Published: 2026-02-21T16:16:05.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2026-2872 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

A security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

Metrics

CVSS 3.1

8.8/10

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

CVSS 4.0

7.4/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.57%

42.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tenda	A21 Firmware	1.0.0.0

References

https://github.com/QIU-DIE/cve-nneeww/issues/3Exploit, Issue Tracking, Mitigation, Third Party Advisory
https://vuldb.com/?ctiid.347109Permissions Required, VDB Entry
https://vuldb.com/?id.347109Third Party Advisory, VDB Entry
https://vuldb.com/?submit.754634Third Party Advisory, VDB Entry
https://www.tenda.com.cn/Product

Timeline

Published: Feb 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-2872?

How severe is CVE-2026-2872?

CVE-2026-2872 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2026-2872?

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-2026-2872?

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

Scan your code now

Source: NVD / NIST