# CVE-2021-25487: Samsung Mobile Devices Out-of-Bounds Read Vulnerability

> CVE-2021-25487: Samsung Mobile Devices Out-of-Bounds Read Vulnerability. CVSS 7.3 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-25487
Last updated: 2025-10-21T23:25:30Z

- Published: 2021-10-06 17:10 UTC · Updated: 2025-10-21 23:25 UTC · Assigner: Samsung Mobile
- CVSS: 7.3 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
- EPSS: 0.63%, 50th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2023-06-29, federal due date 2023-07-20, ransomware use: Unknown
- CWE: CWE-125

## Description

Lack of boundary checking of a buffer in set\_skb\_priv() of modem interface driver prior to SMR Oct-2021 Release 1 allows OOB read and it results in arbitrary code execution by dereference of invalid function pointer.

## CISA required action

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable

## Affected vendors and products

- Samsung Mobile: Samsung Mobile Devices

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-25487)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-25487)
- [https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10](https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2021-25487 · Markdown: https://rewindex.com/cve/CVE-2021-25487.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-25487 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:32.058Z