CVE-2026-6240: medium-severity vulnerability in TP-Link Systems Inc. Tapo C520WS v2
Authenticated Stack-based Buffer Overflow in ONVIF DeleteUsers Service on TP-Link Tapo C520WS
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.2%
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.
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
TP-Link Systems Inc. · Tapo C520WS v2Related CVEs — TP-Link Systems Inc. Tapo C520WS v2
In the same product, most dangerous first.
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