Vulnerability record

CVE-2021-25369

Samsung Mobile Devices Improper Access Control Vulnerability

ElevatedExploitation confirmedCISA KEV

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Mobile Devices, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Nov 29, 2022.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

An improper access control vulnerability in sec_log file prior to SMR MAR-2021 Release 1 exposes sensitive kernel information to userspace.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Source
Mobile Devices	Samsung	KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 30, 2026
CVE-2021-25369 scored CVSS 5.5: Samsung Mobile Devices, Samsung Mobile Devices Improper Access Control Vulnerability
CISA lists this as exploited in the wild. Unpatched Mobile Devices systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database

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We have not published a story about this vulnerability yet.

security.samsungmobile.com https://security.samsungmobile.com/securityUpdate.smsb
nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2021-25369
security.samsungmobile.com https://security.samsungmobile.com
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-25369