{"cve":"CVE-2026-34120","nvd":{"published":"2026-04-02T18:16:28.827","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"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\ninsufficient alignment and validation of buffer boundaries when processing streaming inputs.An attacker\non the same network segment could trigger heap memory corruption conditions by\nsending crafted payloads that cause write operations beyond allocated buffer\nboundaries.  Successful exploitation\ncauses a Denial-of-Service (DoS) condition, causing the device’s process to\ncrash or become unresponsive.","cvss_v4":{"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-122"],"references":["https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes","https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes","https://www.tp-link.com/us/support/faq/5047/"],"products":["tp-link:tapo_c520ws_firmware"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-34120","score":0.00239,"percentile":0.14984,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}