CVE-2021-25337
Samsung Mobile Devices Improper Access Control Vulnerability
Samsung Mobile Devices
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 8 November 2022. US federal agencies were required to remediate it by 29 November 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 2.8%, which is higher than 86.6% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Frequently asked questions
Is CVE-2021-25337 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2021-25337.
What does CVE-2021-25337 affect?
CVE-2021-25337 affects Samsung Mobile Devices. 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.
How severe is CVE-2021-25337?
CVE-2021-25337 is rated MEDIUM with a CVSS base score of 4.4. EPSS puts the probability of exploitation in the next 30 days at 2.8%, higher than 86.6% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 29 November 2022.
How should organisations respond to CVE-2021-25337?
Apply the vendor patch for Samsung Mobile Devices as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.