Answer in brief
CVE-2026-15315 records a High severity (CVSS 8.7) vulnerability in Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C120 and C200. The current sources do not mark it as known exploited. The current feed maps TP-Link Systems Inc/Tapo C120 v1 (generic), TP-Link Systems Inc./Tapo C200 v5 (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps TP-Link Systems Inc/Tapo C120 v1 (generic), TP-Link Systems Inc./Tapo C200 v5 (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:h:tp-link:tapo_c120:-:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:h:tp-link:tapo_c200:5.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:tp-link:tapo_c120_firmware:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:tp-link:tapo_c200_firmware:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| TP-Link Systems Inc/Tapo C120 v1generic | >=0 <1.9.3 Build 260521 | 1.9.3 Build 260521 |
| TP-Link Systems Inc./Tapo C200 v5generic | >=0 <V5_1.4.6 Build 260709 Rel.27675n | V5_1.4.6 Build 260709 Rel.27675n |
Published upstream
Aug 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 18, 2026
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.
Quoted source text, attributed separately from HOL analysis.