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CVE record · CVE-2025-21043

Out-of-bounds write in Samsung Mobile Devices

CVSS 8.8 HighCriticalIn CISA KEVEPSS 0.022 · 82nd percentile

Critical, because:

  • In CISA’s KEV catalogue since 2 Oct 2025: it is known to be exploited.

How we decide what’s critical

Published by the CVE Program (CNA: SamsungMobile) at 12 Sept 2025, 07:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Samsung Mobile Samsung Mobile Devices
  • unaffected SMR Sep-2025 Release in Android 13, 14, 15, 16
Other versions: affected
Identifiers
CVE-2025-21043
CNA
SamsungMobile
Weakness (CWE)
CWE-787
Tags
Published
12 Sept 2025
Updated
7 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CNA (SamsungMobile)
  • CISA KEV Listed since 2 Oct 2025: known to be exploited.
  • EPSS 0.022, the 82nd percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 12 Sept 2025. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.