PT-2026-24916 · Tenda · W3+1

Svigo_O · Published 2026-03-12 · Updated 2026-03-12 · CVE-2026-3976

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Tenda W3 version 1.0.0.3(2204)

Description A weakness exists in the Tenda W3 version 1.0.0.3(2204). The formWifiMacFilterSet function within the /goform/WifiMacFilterSet file of the POST Parameter Handler component is affected. Manipulating the index/GO argument can lead to a stack-based buffer overflow. The attack can be launched remotely. The exploit has been made publicly available and could be used for attacks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Stack Overflow

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-119

CWE-787

Related Identifiers

CVE-2026-3976

Affected Products

W3

W3 Firmware

References · 12

• 🔥 https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-formWifiMacFilterSet-index-buffer-overflow · Exploit
• 🔥 https://github.com/Svigo-o/Tenda_vul/tree/main/tenda-w3-formWifiMacFilterSet-go-buffer-overflow · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-3976 · Security Note
• https://tenda.com.cn · Note
• https://vuldb.com/?submit.769179 · Note
• https://vuldb.com/?ctiid.350411 · Note
• https://twitter.com/CveFindCom/status/2031938645809119514 · Twitter Post
• https://twitter.com/CVEarity/status/2032076213859336709 · Twitter Post
• https://vuldb.com/?submit.769180 · Note
• https://vuldb.com/?id.350411 · Note
• https://twitter.com/CVEnew/status/2031992340072792178 · Twitter Post
• https://t.me/CVEtracker/47222 · Telegram Post