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CVE-2025-21078

24
FAUCET Score

CVE-2025-21078 describes a medium-severity vulnerability in Samsung Smart Switch versions prior to 3.7.68.6, stemming from the use of an insufficiently random secretKey. This flaw allows adjacent attackers, without requiring user interaction or privileges, to access sensitive backup data from applications. While there is no known active exploitation, publicly available exploit code, or significant community discussion, the potential for high confidentiality impact warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.7.68.6CPE matchmatch criteria
cpe:2.3:a:samsung:smart_switch:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
11.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 13th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

security.samsungmobile.com / serviceWeb.smsb
Vendor Advisory