A stack-based buffer overflow vulnerability exists in Tapo C520WS v2 in the ONVIF DeleteUsers service, due to insufficient boundary checks when handling multiple user deletion parameters. An authenticated attacker can send a crafted malicious request containing an excessive number of identifiers to overflow stack memory.
Successful exploitation may result in a service crash or deadlock, leading to DoS affecting device management and monitoring functionality.
Metrics
Affected Vendors & Products
References
History
Mon, 08 Jun 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Sun, 07 Jun 2026 11:15:00 +0000
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|---|---|---|
| First Time appeared |
Tp-link
Tp-link tapo C520ws V2 |
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| Vendors & Products |
Tp-link
Tp-link tapo C520ws V2 |
Sat, 06 Jun 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
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| Description | A stack-based buffer overflow vulnerability exists in Tapo C520WS v2 in the ONVIF DeleteUsers service, due to insufficient boundary checks when handling multiple user deletion parameters. An authenticated attacker can send a crafted malicious request containing an excessive number of identifiers to overflow stack memory. Successful exploitation may result in a service crash or deadlock, leading to DoS affecting device management and monitoring functionality. | |
| Title | Authenticated Stack-based Buffer Overflow in ONVIF DeleteUsers Service on TP-Link Tapo C520WS | |
| Weaknesses | CWE-121 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: TPLink
Published: 2026-06-05T23:51:39.483Z
Updated: 2026-06-08T13:08:05.175Z
Reserved: 2026-04-13T17:10:23.938Z
Link: CVE-2026-6240
Updated: 2026-06-08T13:08:00.721Z
Status : Deferred
Published: 2026-06-06T00:16:41.103
Modified: 2026-06-08T15:01:06.580
Link: CVE-2026-6240
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