What is CVE-2025-21039?

CVE-2025-21039 is a medium-severity vulnerability in Samsung Sassistant, classified under CWE-925 : IMPROPER VERIFICATION OF INTENT BY BROADCAST RECEIVER. CVSS score: 5.1/10. Published 2025-09-03.

How severe is CVE-2025-21039?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Vulnerability in Samsung Sassistant

CVE-2025-21039

Improper verification of intent by SystemExceptionalBroadcastReceiver in S Assistant prior to version 9.3.2 allows local attackers to modify itinerary information.

Published 2025-09-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.001 (1.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Samsung Sassistant
Samsung Mobile S Assistant — versions 9.3.2

References

security.samsungmobile.com/serviceWeb.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2025-21039?: CVE-2025-21039 is a medium-severity vulnerability in Samsung Sassistant, classified under CWE-925 : IMPROPER VERIFICATION OF INTENT BY BROADCAST RECEIVER. CVSS score: 5.1/10. Published 2025-09-03.
How severe is CVE-2025-21039?: Medium severity. CVSS v3 base score is 5.1 out of 10.