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Vulnerability record · CVE-2021-25496 · published 6 October 2021

CVE-2021-25496: Samsung notes classic buffer overflow vulnerability

Samsung · Notes

A possible buffer overflow vulnerability in maetd_dec_slice of libSPenBase library of Samsung Notes prior to Samsung Notes version 4.3.02.61 allows arbitrary code execution.

7.8 CVSS 3.1 High EPSS 0.28% · top 81.3% CWE-120 · Classic buffer overflow
7.8CVSS 3.1 base score, v2 4.6
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A possible buffer overflow vulnerability in maetd_dec_slice of libSPenBase library of Samsung Notes prior to Samsung Notes version 4.3.02.61 allows arbitrary code execution.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=10 Vendor Advisory
https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=10 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2024-34657Samsung notes out-of-bounds write vulnerabilityStack-based out-of-bounds write in Samsung Notes prior to version 4.4.21.62 allows remote attackers to execute arbitrary code.EPSS 0.63%7.8CVE-2025-20931Samsung notes out-of-bounds write vulnerabilityOut-of-bounds write in parsing bmp image in Samsung Notes prior to version 4.4.26.71 allows local attackers to execute arbitrary code.EPSS 0.17%7.8CVE-2025-20929Samsung notes out-of-bounds write vulnerabilityOut-of-bounds write in parsing jpeg image in Samsung Notes prior to version 4.4.26.71 allows local attackers to execute arbitrary code.EPSS 0.17%7.8CVE-2024-34660Samsung notes out-of-bounds write vulnerabilityHeap-based out-of-bounds write in Samsung Notes prior to version 4.4.21.62 allows local attackers to execute arbitrary code.EPSS 0.21%7.8CVE-2024-34656Samsung notes path traversal vulnerabilityPath traversal in Samsung Notes prior to version 4.4.21.62 allows local attackers to execute arbitrary code.EPSS 0.24%7.8CVE-2024-34622Samsung notes out-of-bounds write vulnerabilityOut-of-bounds write in appending paragraph in Samsung Notes prior to version 4.4.21.62 allows local attackers to potentially execute arbitrary code w…EPSS 0.21%7.8CVE-2024-34623Samsung notes out-of-bounds write vulnerabilityOut-of-bounds write in applying connected information in Samsung Notes prior to version 4.4.21.62 allows local attackers to potentially execute arbit…EPSS 0.24%7.8CVE-2021-25497Samsung notes classic buffer overflow vulnerabilityA possible buffer overflow vulnerability in maetd_cpy_slice of libSPenBase library of Samsung Notes prior to Samsung Notes version 4.3.02.61 allows a…EPSS 0.28%

Source: NIST National Vulnerability Database (record CVE-2021-25496), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.