CVE-2021-25339
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1...
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to corrupt EL2 memory.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to corrupt EL2 memory.
- Record
CVE-2021-25339- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2021-12235
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to corrupt EL2 memory.
- Record
EUVD-2021-12235- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6ffc-qmf6-7p73 No score
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1...
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to corrupt EL2 memory.
- Record
GHSA-6ffc-qmf6-7p73- Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Improper address validation in HArx in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to corrupt EL2 memory.
- Record
CVE-2021-25339- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L - CVSS 3.1
- 5.2 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-25339 is a medium vulnerability (CVSS 4.4) in Samsung Mobile Devices, published March 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.