CVE-2021-25338

MEDIUM
5.2
CVSS Score
Published: March 4, 2021 at 08:59 PM UTC
Updated: June 17, 2026 at 03:41 AM UTC
2 products affected across 2 vendorsAndroidSamsung Mobile Devices· also runs on 1 platform

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Severity
MEDIUM5.2
Exploit prediction
EPSS 0.1%

Description

Improper memory access control in RKP in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to write certain part of RKP EL2 memory region.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

samsung-exynos-9830 (environment)
Selected Q(10.0), R(11.0) ≤ v < SMR Mar-2021 Release 1Selected Q(10.0), R(11.0)
Affected range stops below SMR Mar-2021 Release 1, so it looks safe — our inference, not a vendor statement

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCVendor Advisory
https://security.samsungmobile.com
x_refsource_MISCx_refsource_CONFIRMVendor Advisory
https://security.samsungmobile.com/securityUpdate.smsb

CVSS

Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20NVD-CWE-Other

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