CVE-2026-2872
Last modified
CVE-2026-2872 is a high-severity vulnerability rated 8.8/10 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/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
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
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-2872?
How severe is CVE-2026-2872?
How do I fix CVE-2026-2872?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-28714Unnecessary transmission of sensitive cryptographic material…4.8
- CVE-2026-28715Sensitive information disclosure due to improper authorizati…6.5
- CVE-2026-28716Information disclosure and manipulation due to improper auth…4.4
- CVE-2026-28717Local privilege escalation due to improper directory permiss…5
- CVE-2026-28718Denial of service due to insufficient input validation in au…7.5
- CVE-2026-28719Unauthorized resource manipulation due to improper authoriza…4.3
- CVE-2026-28720Unauthorized modification of settings due to insufficient au…4.3
- CVE-2026-28721Local privilege escalation due to improper soft link handlin…7.3
- CVE-2026-28722Local privilege escalation due to improper soft link handlin…7.3
- CVE-2026-28723Unauthorized report deletion due to insufficient access cont…4.3
- CVE-2026-28724Unauthorized data access due to insufficient access control …4.3
- CVE-2026-28725Sensitive information disclosure due to improper configurati…5.5
Are you affected by CVE-2026-2872?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST