CVE-2026-34120
mediumpriority · track · 26EPSS 0.002 · 13 %ileEUUSEPSS · scored 2026-10-28
A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to insufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker on the same network segment could trigger heap memory corruption conditions by sending crafted payloads that cause write operations beyond allocated buffer boundaries. Successful exploitation causes a Denial-of-Service (DoS) condition, causing the device’s process to crash or become unresponsive.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notescnnvd
- https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notescnnvd
- https://www.tp-link.com/us/support/faq/5047/cnnvd
- https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notesenisa_euvd
- https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notesenisa_euvd
- https://www.tp-link.com/us/support/faq/5047/enisa_euvd
- https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-NotesRelease Notesnvd
- https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-NotesRelease Notesnvd
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