CVE-2026-2870A security flaw has been discovered in Tenda A21 1.0.0.0.
Updated under an hour ago ()
Does this affect you?
It affects tenda a21_firmware. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
A security flaw has been discovered in Tenda A21 1.0.0.0. Affected by this issue is the function set_qosMib_list of the file /goform/formSetQosBand. The manipulation of the argument list results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119, CWE-121
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
tenda a21_firmware tenda:a21_firmware | 1.0.0.0 | NVD |
References
- https://github.com/QIU-DIE/cve-nneeww/issues/1exploit, issue-tracking, mitigation, third-party-advisory
- https://vuldb.com/?ctiid.347107permissions-required, vdb-entry
- https://vuldb.com/?id.347107third-party-advisory, vdb-entry
- https://vuldb.com/?submit.754627third-party-advisory, vdb-entry
- https://www.tenda.com.cn/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.