CVE-2026-3973 describes a critical stack-based buffer overflow vulnerability in Tenda W3 1.0.0.3(2204) routers, specifically within the formSetAutoPing function via manipulated POST parameters. Rated 8.8 HIGH on the CVSS scale, this flaw is remotely exploitable with low attack complexity and requires only low privileges, posing a significant risk. Successful exploitation could lead to arbitrary code execution and full compromise of the affected device, impacting confidentiality, integrity, and availability. Although not currently listed on CISA's KEV, the exploit has been publicly disclosed, indicating a heightened risk of future exploitation despite minimal community discussion to date.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.0.0.3\(2204\)CPE matchmatch criteria | cpe:2.3:o:tenda:w3_firmware:1.0.0.3\(2204\):*:*:*:*:*:*:* |
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.
Remediation records are not available for this CVE.