CVE-2026-21078: Insufficient verification of data authenticity in Smart Switch trouble scanning mode prior to version 3.7.72.6

Q: How do I fix CVE-2026-21078?

smart switch: upgrade to 3.7.72.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-21078 being exploited?

CVE-2026-21078 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-21078 affect?

CVE-2026-21078 affects smart switch. Severity is medium (CVSS 6.5). Insufficient verification of data authenticity in Smart Switch trouble scanning mode prior to version 3.7.72.6 allows adjacent attackers to spoof device identity.

Q: How urgent is CVE-2026-21078?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-21078 is a medium-severity flaw (CVSS 6.5) affecting smart switch. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Insufficient verification of data authenticity in Smart Switch trouble scanning mode prior to version 3.7.72.6 allows adjacent attackers to spoof device identity.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-345
Published	2026-08-10
Last modified	2026-10-23

Publisher (CNA): Samsung Mobile · Vendor: samsung

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-10 09:17 UTCPublished CVE record published
2026-10-23 20:10 UTCUpdated Record last modified

samsung smart switch UPGRADE

Affected: < 3.7.72.6

Fixed in: 3.7.72.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy smart-switch || rpm -q smart-switch || smart-switch --version

2. UPGRADE to 3.7.72.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade smart-switch

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade smart-switch

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-21078?

smart switch: upgrade to 3.7.72.6. Exact commands for each OS are on this page.

Is CVE-2026-21078 being exploited?

CVE-2026-21078 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-21078 affect?

CVE-2026-21078 affects smart switch. Severity is medium (CVSS 6.5). Insufficient verification of data authenticity in Smart Switch trouble scanning mode prior to version 3.7.72.6 allows adjacent attackers to spoof device identity.

How urgent is CVE-2026-21078?

Priority 24/100. No elevated risk signals yet.

Software pages

Samsung vulnerabilities

Related CVEs

CVE-2026-21083 MEDIUM 6.5 UPGRADE Improper input validation in Smart Switch prior to version 3.7.72.6 allows adjacent attackers to access sensit
CVE-2026-21080 MEDIUM 6.5 UPGRADE Cleartext storage of sensitive information in Smart Switch prior to version 3.7.72.6 allows adjacent attackers
CVE-2026-21079 MEDIUM 6.5 UPGRADE Missing encryption of sensitive data in Smart Switch prior to version 3.7.72.6 allows adjacent attackers to in

References

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