VulnerabilityAnalyzed

CVE-2021-25489

Samsung Mobile Devices Improper Input Validation Vulnerability

KEVMEDIUM 5.5EPSS 0.53%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 20 July 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

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: 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.53% probability · 43th percentile
CISA KEV: Listed 29 June 2023 · due 20 July 2023
Weakness: CWE-20, CWE-134
Affected: samsung/android
Source: mobile.security@samsung.com

CISA notes

Apply updates per vendor instructions or discontinue use of the product if updates are unavailable https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10; https://nvd.nist.gov/vuln/detail/CVE-2021-25489

References

https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10Vendor Advisory
https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-25489US Government Resource

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.