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CISA KEV · Known exploitedMedium

CVE-2021-25489

Samsung Mobile Devices

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
5.5
EPSS
0.53%
41.9% percentile
CISA KEV
Listed
Published
2021.10.07
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability0.53%
Technical severityCVSS 5.5

Vulnerability overview

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.

Affected product and versions

Product
Samsung Mobile Devices
Affected versions
O(8.1), P(9.0), Q(10.0), R(11.0), 8.1, 9.0, 10.0, 11.0
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

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

Due date: 2023.07.20
  1. 1
    Identify

    Confirm that Samsung Mobile Devices and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-134, CWE-20
KEV added
2023.06.29
Ransomware use
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