CVE-2021-25489
KEVSamsung Mobile Devices Improper Input Validation Vulnerability
Description
Samsung mobile devices contain an improper input validation vulnerability within the modem interface driver that results in a format string bug leading to kernel panic.
Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic.
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LPublishedOct 6, 2021
Last modifiedJun 17, 2026
Added to KEVJun 29, 2023
Remediation dueJul 20, 2023
References
- security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10Vendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-25489US Government Resource
0 recent articles mention this CVE
47
Risk assessment · Medium
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1195 days
- CVSS
- 3.3 LOW
- EPSS (30-day exploit probability)
- 0.53% · top 55% of all CVEs
- Weakness
- CWE-20
Recommended actions
- 1.Apply updates per vendor instructions or discontinue use of the product if updates are unavailable
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.