Buffer overflow in Samsung Android
CVE-2025-20983
Out-of-bounds write in checking auth secret in KnoxVault trustlet prior to SMR Jul-2025 Release 1 allows local privileged attackers to write out-of-bounds memory.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.4% 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 Android — versions 14.0, 15.0
- Samsung Mobile Devices — versions SMR Jul-2025 Release in Android 14, 15
Weakness classification (CWE)
References
- security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20983?
- CVE-2025-20983 is a medium-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 6.4/10. Published 2025-07-08.
- How severe is CVE-2025-20983?
- Medium severity. CVSS v3 base score is 6.4 out of 10.