---
title: "CVE-2026-105810: Tapo C320WS - Buffer Overflow"
description: "Tapo C320WS V2.0 contains an authenticated stack-based buffer overflow caused by an oversized encrypted password field in the local onboarding Wi-Fi configuration path, letting authenticated adjacent-network attackers execute commands with root privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-105810/
---

# CVE-2026-105810 Tapo C320WS - Buffer Overflow

Tapo C320WS V2.0 contains an authenticated stack-based buffer overflow caused by an oversized encrypted password field in the local onboarding Wi-Fi configuration path, letting authenticated adjacent-network attackers execute commands with root privileges.

CVSS base score 8.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105810)

## Details

Type

Buffer Overflow

Impact

Remote Code Execution, Privilege Escalation, Denial Of Service, Information Disclosure

CVSS vector

CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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

Published

19 October 2026

Updated

20 October 2026

Weakness

[CWE-121](https://cwe.mitre.org/data/definitions/121.html)

## Vendor fix

Update to the latest firmware version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105810](https://nvd.nist.gov/vuln/detail/CVE-2026-105810)
- [https://www.tp-link.com/en/support/download/tapo-c320ws/v2/#Firmware-Release-Notes](https://www.tp-link.com/en/support/download/tapo-c320ws/v2/#Firmware-Release-Notes)
- [https://www.tp-link.com/us/support/download/tapo-c320ws/#Firmware-Release-Notes](https://www.tp-link.com/us/support/download/tapo-c320ws/#Firmware-Release-Notes)
- [https://www.tp-link.com/us/support/faq/5351/](https://www.tp-link.com/us/support/faq/5351/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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