CVE-2026-6242

Summary

An authenticated format string vulnerability exists in the ONVIF Subscribe service in Tapo C520WS v2 due to improper handling of externally supplied parameters within formatting functions. An attacker may inject crafted format strings into event subscription requests or notification generation path to disrupt normal service execution.

Successful exploitation may cause the event notification service to terminate unexpectedly, resulting in the loss of real-time alarm functionality and disruption of event notifications.

Affected Software

VendorProductVersion RangeStatus
TP-Link Systems Inc.Tapo C520WS v20 < 1.2.6 Build 260528affected

Weaknesses

  • CWE-134: CWE-134 Use of Externally-Controlled format string

ADP Enrichment

CISA ADP Vulnrichment

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

References