Buffer overflow in Samsung Android
CVE-2026-21018
Out-of-bounds write in SveService prior to SMR May-2026 Release 1 allows local privileged attackers to execute arbitrary code.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (4.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Samsung Android — versions 14.0, 15.0, 16.0
- Samsung Mobile Devices — versions SMR May-2026 Release in Android 14, 15, 16
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21018?
- CVE-2026-21018 is a medium-severity vulnerability in Samsung Android, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2026-05-13.
- How severe is CVE-2026-21018?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2026-21018 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.