5248
CVE-2026-15315: Unauthenticated Administrative Authentication Bypass via device_confirm Replay
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.
CVSS v4.0 Score: 8.7 / High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVE-2026-15316: Denial-of-Service via Oversized Encrypted Credential Input
An improper input validation vulnerability in the configuration service for processing encrypted credential data has been identified in Tapo C200 v5. An attacker can send oversized crypted ciphertext values that may trigger exception handling failures, due to insufficient validation, causing the affected device to crash or restart.
Successful exploitation may temporarily disrupt HTTPS management and monitoring functionality, resulting in a denial-of-service (DoS) condition until the service recovers.
CVSS v4.0 Score: 7.1 / High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products/Versions and Fixes:
V5_1.4.6 Build 260709 Rel.27675n
We strongly recommend that users with affected devices take the following actions:
Follow the instructions to update to the latest firmware version:
US: Download for Tapo C120 | TP-Link
Download for Tapo C200 | TP-Link
EN: Download for Tapo C120 | TP-Link
Download for Tapo C200 | TP-Link
This advisory is provided for informational purposes only and is subject to change without notice. The information is provided “as is” without warranties of any kind. TP-Link recommends that customers promptly apply available firmware updates or implement documented workarounds as provided in this advisory. Devices/systems that are not updated or mitigated as described may remain vulnerable, and TP-Link disclaims any responsibility or liability for any damages or losses arising from a failure to implement such updates.
Making Hotel WiFi Secure and Easy to Use
What Is Network Security and How Do I Secure My WiFi Router?
Your feedback helps improve this site.
What’s your concern with this article?
Dissatisfied with product
Get products, events and services for your region.
These cookies are necessary for the website to function and cannot be deactivated in your systems.
accepted_local_switcher, tp_privacy_banner, tp_privacy_base, tp_privacy_marketing, tp_top-banner, tp_popup-bottom, tp_popup-center, tp_popup-right-middle, tp_popup-right-bottom, tp_productCategoryType
id, VISITOR_INFO1_LIVE, LOGIN_INFO, SIDCC, SAPISID, APISID, SSID, SID, YSC, __Secure-1PSID, __Secure-1PAPISID, __Secure-1PSIDCC, __Secure-3PSID, __Secure-3PAPISID, __Secure-3PSIDCC, 1P_JAR, AEC, NID, OTZ
Analysis cookies enable us to analyze your activities on our website in order to improve and adapt the functionality of our website.
Google Analytics & Google Tag Manager
_gid, _ga_ , _ga, _gat_gtag_
Google Ads & DoubleClick
cebsp_, _ce.s, _ce.clock_data, _ce.clock_event, cebs
lidc, AnalyticsSyncHistory, UserMatchHistory, bcookie, li_sugr, ln_or
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
