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CVE-2026-21004

MediumPublished

Improper authentication in Smart Switch prior to version 3.7.69.15 allows adjacent attackers to trigger a denial of service.

Published: Mar 16, 2026
Updated: Mar 16, 2026
Assigning CNA: SamsungMobile
Evidence observed: Aug 13, 2026

Primary CVSS

6.9/ 10Medium

nvd · CVSS 4.0

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

0.2%

Low · next 30 days

Percentile: 8.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Improper authentication in Smart Switch prior to version 3.7.69.15 allows adjacent attackers to trigger a denial of service.

Sources

CVE-2026-21004-SQLite-FTS3-Match-Infoleak-via-Query-CraftingPoC
Proof-of-concept exploit for CVE-2026-21004: uses crafted SQLite FTS3/4 MATCH prefix queries as a blind oracle to recover indexed secret data character by character.

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