Vulnerability details

CVE-2025-15255

Tenda W6-S

Tenda W6-S R7websSsecurityHandler httpd stack-based overflow

CVSS 4.0

9.3Critical

Official description

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.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`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`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.8Critical	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
10.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Tenda	W6-S	1.0.0.4(510)	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/?id.338645 vdb-entrytechnical-description
https://vuldb.com/?ctiid.338645 signaturepermissions-required
https://vuldb.com/?submit.725500 third-party-advisory
https://www.tenda.com.cn/ product
https://github.com/dwBruijn/CVEs/blob/main/Tenda/R7WebsSecurityHandler.md exploit

Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published: 2025-12-30
Last updated: 2026-02-24
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

4.65%

Probability of exploitation in 30 days

91.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-121
Stack-based Buffer Overflow
CWE-119
Memory Corruption