Is CVE-2026-21004 in the CISA KEV catalog?

No. CVE-2026-21004 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-21004?

CVE-2026-21004 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-21004?

CVE-2026-21004 has an EPSS score of 0.18% (8th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-21004?

Upgrade smart switch to 3.7.69.15 or later.

CVE & CISA-KEV Catalog

CVE-2026-21004

MEDIUM

6.5

CVSS v3

NVD

Description

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

CWE-287Improper Authentication

How to fix

Remediation Available

smart switchNVD

Affected:< 3.7.69.15Fixed in:3.7.69.15CVE-2026-21004derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

0.18%probability of exploitation in 30 days

8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Vendor Advisory1

security.samsungmobile.com

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	Fix

Embed a live status badge for CVE-2026-21004

Markdown

[![CVE-2026-21004](https://tridentstack.com/cve/badge/CVE-2026-21004.svg)](https://tridentstack.com/cve/CVE-2026-21004)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-21004"><img src="https://tridentstack.com/cve/badge/CVE-2026-21004.svg" alt="CVE-2026-21004"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-31.