CVE-2026-15315

CVE Enrichment

CVSS: 8.7 HIGH
EPSS: 0.30%
EPSS Percentile: 21.70%
CISA KEV: Not listed

Description

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.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: f23511db-6c3e-4e32-a477-6aa17d310630
Published: 19-Aug-2026 05:16
Last Modified: 05-Sep-2026 00:39
EPSS Date: 2026-10-16
CWE: CWE-287

CVSS Vector


            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 /
                            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

Affected Products / Versions

tp-link / tapo_c120_firmware
Version / affected range: * · before (exclusive) 1.9.3
cpe:2.3:o:tp-link:tapo_c120_firmware:*:*:*:*:*:*:*:*
tp-link / tapo_c200_firmware
Version / affected range: * · before (exclusive) 1.4.6
cpe:2.3:o:tp-link:tapo_c200_firmware:*:*:*:*:*:*:*:*

References

Last enrichment sync: 17-Oct-2026 22:43
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

TP-Link fixed both issues, tracked as CVE-2026-15315 and CVE-2026-15316, in firmware V5_1.4.6 released in August. Weekly Cybersecurity Roundup: Ransomware Sentencing, AI Agent Attacks and Critical Flaws

CVE (2)

Malware (4)

Threat Actors (1)

MITRE ATT&CK (2)

Vendors (6)

Products (9)

Industries (1)

Countries (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.