CVE-2021-25337

Exp

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.

Published: 2021-03-04 Last update: 2025-10-30 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-25337 is rated Active Exploitation (70/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.80%). CISA KEV confirms active exploitation (added 2022-11-08) affecting Samsung / Mobile Devices. a weakness (CWE-269) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2021-25337

Name: Samsung Mobile Devices Improper Access Control Vulnerability · CISA KEV detail

Exploit added: 2022-11-08

Action due: 2022-11-29

Required action: Apply updates per vendor instructions.

Exploit prediction scoring system (EPSS) score for CVE-2021-25337

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-21 1.12% 0.80% -0.32%
2 2026-03-06 0.48% 1.12% +0.65%
3 2026-02-09 — 0.48% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-25337

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.4 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 2.5 [email protected]
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 5.2 [email protected]
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2021-25337

Affected software / configurations for CVE-2021-25337

Vendor Product Version Raw CPE
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-apr-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-apr-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-aug-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-aug-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-dec-2018-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-dec-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-dec-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-feb-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-feb-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-feb-2021-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jan-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jan-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jan-2021-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jul-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jul-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jun-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-jun-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-mar-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-mar-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-may-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-may-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-nov-2018-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-nov-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-nov-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-oct-2018-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-oct-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-oct-2020-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-sep-2019-r1:*:*:*:*:*:*
samsung android 9.0 cpe:2.3:o:samsung:android:9.0:smr-sep-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-apr-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-aug-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-dec-2019-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-dec-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-feb-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-feb-2021-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-jan-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-jan-2021-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-jul-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-jun-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-mar-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-may-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-nov-2019-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-nov-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-oct-2020-r1:*:*:*:*:*:*
samsung android 10.0 cpe:2.3:o:samsung:android:10.0:smr-sep-2020-r1:*:*:*:*:*:*
samsung android 11.0 cpe:2.3:o:samsung:android:11.0:smr-dec-2020-r1:*:*:*:*:*:*
samsung android 11.0 cpe:2.3:o:samsung:android:11.0:smr-feb-2021-r1:*:*:*:*:*:*
samsung android 11.0 cpe:2.3:o:samsung:android:11.0:smr-jan-2021-r1:*:*:*:*:*:*

References for CVE-2021-25337

cvelogic Threat Intelligence