CVE-2021-25437

CRITICAL

Published Jul 8, 20214y ago · Modified Jun 17, 20262w ago

9.8 CVSS 3.1

Critical

Published Jul 8, 2021 4y ago

Last Modified Jun 17, 2026 2w ago

Description

Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing FOTA update file.

CVSS Details

Base Score

9.8

Exploitability

3.9

Impact

5.9

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 1

Vendor	Product	Version	Range
linux	tizen	*	<5.5

References 1

security.samsungmobile.com https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=7

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.