CVE-2026-8618

Summary

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.

Affected Software

VendorProductVersion RangeStatus
TP-Link Systems Inc.Deco M9 Plus V20 < 1.9.2 Build 20260818affected

Weaknesses

  • CWE-121: CWE-121 Stack-based buffer overflow

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References