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Description

A stack-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within a configuration handling component due to insufficient input validation. An attacker can exploit this vulnerability by supplying an excessively long value for a vulnerable configuration parameter, resulting in a stack overflow. Successful exploitation results in Denial-of-Service (DoS) condition, leading to a service crash or device reboot, impacting availability.

PUBLISHED Reserved 2026-03-25 | Published 2026-04-02 | Updated 2026-04-02 | Assigner TPLink




HIGH: 7.1CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-121 Stack-based buffer overflow

Product status

Default status
unaffected

Any version before 1.2.4 Build 260326 Rel.24666n
affected

References

www.tp-link.com/us/support/download/tapo-c520ws/ patch

www.tp-link.com/en/support/download/tapo-c520ws/ patch

www.tp-link.com/us/support/faq/5047/ vendor-advisory

cve.org (CVE-2026-34122)

nvd.nist.gov (CVE-2026-34122)

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