CVE-2026-2872 is a high-severity stack-based buffer overflow vulnerability affecting Tenda A21 1.0.0.0 routers, specifically within the set_device_name function of the /goform/setBlackRule component. This flaw allows a remote, authenticated attacker to achieve high impact on confidentiality, integrity, and availability by manipulating the devName/mac argument. While the exploit has been publicly disclosed, there is no evidence of active exploitation, and it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.0.0.0CPE matchmatch criteria | cpe:2.3:o:tenda:a21_firmware:1.0.0.0:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.