CVE-2026-21078

Device identity spoofing via trouble scanning

Published Aug 10, 2026 · Updated Aug 10, 2026

Insufficient authenticity verification in Samsung Smart Switch before 3.7.72.6 allows adjacent attackers to spoof device identity. In Android trouble scanning mode, Smart Switch accepts device-identity data without adequate authenticity checks; Samsung has not disclosed the specific evidence or validation path. Exploitation requires adjacent access, low privileges, and active user interaction, and it causes Smart Switch to trust a false device identity.

CVSS severity4.7
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient authenticity verification in Samsung Smart Switch before 3.7.72.6 allows adjacent attackers to spoof device identity. In Android trouble scanning mode, Smart Switch accepts device-identity data without adequate authenticity checks; Samsung has not disclosed the specific evidence or validation path. Exploitation requires adjacent access, low privileges, and active user interaction, and it causes Smart Switch to trust a false device identity.

The record

CVE
CVE-2026-21078
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Smart Switch
Classifications
CWE-345, T1036
Attack vector
adjacent
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

Samsung Electronics Co., Ltd. · Samsung Smart SwitchAffected versions are unavailable in this record.

Published CVSS scores

4.7Samsung MobileCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity
T1036Masquerading

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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