Vulnerability intelligence

CVE-2026-8618

TP-Link Systems Inc. Deco M9 Plus V2 CWE-121

A stack-based buffer overflow vulnerability exists in the TDDPv2 service (/usr/bin/tddp) on Deco M9 Plus due to insufficient validation of decrypted request data length before it is copied into a fixed-size stack buffer in the subtype 0x91 handler. Successful exploitation may allow an adjacent, unauthenticated attacker to cause a denial of service or achieve arbitrary code execution during the device setup phase through crafted TDDP packets.

CVSS Score

7.7

High

EPSS — Exploit Probability

0.2%

Riskier than 13% of all CVEs · checked 2026-10-02

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

Patch available

Vendor fix published