EUVD-2026-20828CVSS Vector
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
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Description
A vulnerability was identified in Tenda AC15 15.03.05.18. This affects the function websGetVar of the file /goform/SysToolChangePwd. Such manipulation of the argument oldPwd/newPwd/cfmPwd leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.
Analysis
Stack-based buffer overflow in Tenda AC15 router firmware 15.03.05.18 websGetVar function allows authenticated remote attackers to execute arbitrary code with high impact to confidentiality, integrity, and availability. The vulnerability resides in /goform/SysToolChangePwd endpoint where manipulation of oldPwd, newPwd, or cfmPwd parameters triggers memory corruption. …
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Remediation
Within 24 hours: Inventory all Tenda AC15 routers in production and identify firmware versions via administrative interface. Within 7 days: Restrict administrative access to AC15 routers to a limited security team; disable remote management if not operationally required; rotate all router credentials and enforce strong passwords. …
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