CVE-2025-20919
Published: 06 March 2025
Summary
CVE-2025-20919 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-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Requires timely remediation of flaws like the out-of-bounds read in Samsung Notes by applying patches such as version 4.4.26.71.
Enforces memory protection mechanisms to prevent unauthorized out-of-bounds memory reads during video content processing.
Mandates validation of binary video content inputs to block malformed data that triggers the out-of-bounds read vulnerability.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The out-of-bounds read vulnerability directly enables local memory access to disclose sensitive data from the system, facilitating data collection from local sources.
NVD Description
Out-of-bounds read in applying binary of video content in Samsung Notes prior to version 4.4.26.71 allows attackers to read out-of-bounds memory.
Deeper analysisAI
CVE-2025-20919, published on 2025-03-06, is an out-of-bounds read vulnerability (CWE-125) in the Samsung Notes application prior to version 4.4.26.71. The flaw occurs during the processing of binary data from video content, enabling attackers to access memory outside the intended boundaries. 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 primarily due to high confidentiality impact.
A local attacker with low privileges can exploit this vulnerability with low complexity and no user interaction required. By triggering the malformed video content processing in Samsung Notes, the attacker can read sensitive out-of-bounds memory contents, potentially disclosing confidential information such as other processes' data or application secrets.
Samsung's security advisory for March 2025, available at https://security.samsungmobile.com/serviceWeb.smsb?year=2025&month=03, addresses this issue. Mitigation requires updating Samsung Notes to version 4.4.26.71 or later to prevent exploitation.
Details
- CWE(s)