Samsung · Mobile Devices
CVE-2021-25337
Samsung Mobile Devices Improper Access Control Vulnerability
What it is
Improper access control in clipboard service in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows untrusted applications to read or write certain local files.
CISA: Samsung mobile devices contain an improper access control vulnerability in clipboard service which allows untrusted applications to read or write arbitrary files. This vulnerability was chained with CVE-2021-25369 and CVE-2021-25370.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: November 29, 2022
More exploited flaws from Samsung
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Nov 10, 2025 | Out-of-Bounds Write | Mobile Devices | High 8.8 | 36% |
| Oct 2, 2025 | Out-of-Bounds Write | Mobile Devices | High 8.8 | 2.2% |
| Sep 18, 2023 | Use-After-Free | Mobile Devices | Medium 5.0 | 0.4% |
| Jun 29, 2023 | Unspecified | Mobile Devices | Medium 6.1 | 0.8% |
| Jun 29, 2023 | Improper Boundary Check | Mobile Devices | Medium 6.1 | 0.8% |
| Jun 29, 2023 | Race Condition | Mobile Devices | Medium 6.4 | 0.4% |
| Jun 29, 2023 | Race Condition | Mobile Devices | Medium 6.4 | 0.4% |
| Jun 29, 2023 | Out-of-Bounds Read | Mobile Devices | High 7.3 | 0.6% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.