CVE-2026-15315

Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C120 and C200

No known exploitation. EPSS puts it in the 21st percentile. A vendor fix is available.

CVSS 3.18.8High EPSS percentile21st0.3% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2026-08-18Updated 2026-09-04Sources: CVE.org, NVD

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Steps

Written by AI from the record

Check each TP-Link Tapo C120 v1 and C200 v5 camera’s firmware version in the Tapo app or its device settings.
Update Tapo C120 v1 to 1.9.3 Build 260521 or later, and Tapo C200 v5 to V5_1.4.6 Build 260709 Rel.27675n or later.
Until every camera is updated, keep cameras on a private network and prevent guests or unknown devices from joining it.

Vendor advisory Usually a quick update

Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Tapo C120 v1 and C200 v5 contain an improper authentication vulnerability within the login authentication verification module. An attacker on the local network can exploit weaknesses in challenge parameter validation to bypass normal authentication controls and obtain administrative session tokens. Successful exploitation may allow an attacker to subsequently execute privileged management actions, enable unauthorized administrative access and temporary disruption of device services, resulting in a denial-of-service (DoS) condition.

In plain language

Written by AI from the record

This affects TP-Link Tapo C120 v1 and C200 v5 cameras: someone on your local network can take over the camera without its password, so update it promptly.

Unauthenticated administrative authentication bypass in Tapo C120 v1 and C200 v5 caused by replayable, weakly validated device_confirm challenge parameters.

If you're affected

Full camera takeover
Unauthorized settings changes
Camera service disruption
Loss of camera availability

What is it

A weakness in the camera’s sign-in process lets a nearby person reuse certain login information to enter as the administrator without knowing the password. It is like someone reusing a previously accepted visitor pass to gain control of the security-room controls, including turning a camera’s service off temporarily.

Who is affected

This matters to you if you run TP-Link Tapo C120 v1 or C200 v5 cameras. An attacker does not need a camera login or anyone’s help, but must be connected to the same local network as the camera.

How urgent is it

A person who gets onto your local network can take administrative control of an affected camera without a password. Treat this as urgent because the camera is reachable in its default setup and an attacker can change its settings or interrupt its service.

What to do — in detail

Confirm the exact camera hardware version and installed firmware in the Tapo app or device administration settings. Upgrade Tapo C120 v1 to 1.9.3 Build 260521 or later and Tapo C200 v5 to V5_1.4.6 Build 260709 Rel.27675n or later; the vendor also lists 1.9.3 for Tapo C120 firmware and 1.4.6 for Tapo C200 firmware. If an update must wait, place cameras on a dedicated private network, block guest-network access to that network, and remove unknown devices from it. After updating, review camera administrator settings and recent configuration changes, then confirm that cameras remain online and recording normally. CISA has not added this CVE to KEV, so no CISA remediation due date is listed.

Technical context

CVSS 8.8 High (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). CWE-287 improper authentication: an adjacent-network attacker can replay device_confirm-related challenge parameters to bypass login verification and obtain administrative session access. No CISA KEV listing, dated exploitation claim, public exploit code, or reported incident was identified. EPSS is 0.3% (22nd percentile) with a flat trend; this is predictive only. Press attention is rising due to a roundup associated with Black Axe, not a confirmed exploitation report.

This is a general assessment based on public vulnerability data. It does not account for your specific infrastructure — when in doubt, consult a security specialist.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS21st

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.3% chance of exploitation activity in the next 30 days, which ranks it in the 21st percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

9 events over 17 days, from the signal feeds we watch.

2026-09-04Patch availablerecord updated
2026-08-28Record updatedrecord updated
2026-08-20Record updated
2026-08-18Publishedweakness classified, att&ck mapped, record updated

Affected products

tp-linkcommercial · TWaka tp link
- tapo c120 firmwareMixedNetworking Infrastructure / router-switch
- tapo c200 firmwareNetworking Infrastructure
TP-Link Systems Inc.commercial · CNaka tp-link
- Tapo C200 v5Networking Infrastructure
TP-Link Systems Inc
- Tapo C120 v1

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Scored 8.8 by NVD.

How it is reached

Attack Vector AdjacentRequires access to the local network (e.g. same Wi-Fi, Bluetooth)
Attack Complexity LowNo special conditions — the attack can be reliably reproduced
Privileges Required NoneNo authentication required — anyone can exploit this
User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

Confidentiality HighTotal information disclosure — all data in the component is compromised
Integrity HighTotal loss of integrity — attacker can modify any data in the component
Availability HighTotal denial of service — the component is completely unavailable