CVE-2025-20922
Published: 06 March 2025
Summary
CVE-2025-20922 is a medium-severity Out-of-bounds Read (CWE-125) vulnerability in Samsung Notes. Its CVSS base score is 5.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 45.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-16 (Memory Protection) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly requires identification, reporting, and timely remediation of flaws such as the out-of-bounds read in Samsung Notes by applying patches like version 4.4.26.71.
Implements runtime memory protections like address space layout randomization and guard pages to prevent unauthorized out-of-bounds memory reads by local attackers.
Enforces validation of text inputs to the appending paragraph function to avoid malformed data triggering out-of-bounds memory access.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Out-of-bounds read enables local attacker to access and read sensitive memory contents containing confidential data or app internals, directly facilitating data collection from local system.
NVD Description
Out-of-bounds read in appending text paragraph in Samsung Notes prior to version 4.4.26.71 allows attackers to read out-of-bounds memory.
Deeper analysisAI
CVE-2025-20922 is an out-of-bounds read vulnerability (CWE-125) affecting Samsung Notes versions prior to 4.4.26.71. The flaw occurs in the appending text paragraph functionality, allowing attackers to access memory outside the intended bounds. Published on 2025-03-06, it has a CVSS v3.1 base score of 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N), indicating medium severity with high confidentiality impact but no integrity or availability effects.
A local attacker with low privileges on the affected device can exploit this vulnerability. Exploitation requires low complexity and no user interaction, enabling the attacker to read sensitive out-of-bounds memory contents, potentially exposing confidential data such as user information or application internals.
Samsung's security advisory provides details on the issue, with the vulnerability fixed in Samsung Notes version 4.4.26.71. Mitigation involves updating to this version or later. See https://security.samsungmobile.com/serviceWeb.smsb?year=2025&month=03 for full advisory information.
Details
- CWE(s)