CVE-2025-15255 CRITICAL

CVE-2025-15255: Tenda W6-S R7websSsecurityHandler httpd stack-based overflow

Vendor Tenda
Product W6-S
Weakness CWE-121
Published December 30, 2025
Last update February 24, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was determined in Tenda W6-S 1.0.0.4(510). This impacts an unknown function of the file /bin/httpd of the component R7websSsecurityHandler. Executing a manipulation of the argument Cookie can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.

Key dates

02Disclosure timeline

December 30, 2025 CVE published
February 24, 2026 Record updated