CVEs / CVE-2021-25487
CVE-2021-25487: Samsung Mobile Devices Out-of-Bounds Read Vulnerability
- Known exploited in the CISA KEV catalog since 29 Jun 2023
- high 7.8 CVSS 3.1 (NVD)
- EPSS 0.63% chance of exploitation in the next 30 days, higher than 50% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Samsung mobile devices contain an out-of-bounds read vulnerability within the modem interface driver due to a lack of boundary checking of a buffer in set_skb_priv(), leading to remote code execution by dereference of an invalid function pointer.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Samsung Mobile Samsung Mobile Devices | from O(8.1), P(9.0), Q(10.0), R(11.0), before SMR Oct-2021 Release 1 | SMR Oct-2021 Release 1 |
Exploitation
| In CISA KEV since | 29 Jun 2023 |
|---|---|
| Due date for US federal agencies | 20 Jul 2023 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions or discontinue use of the product if updates are unavailable |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-125 |
References
- CVE-2021-25487 on NVD
- CVE-2021-25487 in the CISA KEV catalog
- https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10 (cited by CISA)
- https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-25487 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.