CVE-2025-21028: Samsung Mobile Devices · Improper Privilege Management
Affects Samsung Mobile DevicesSource CVE Database V5
Not known to be exploited · CVSS 5.5 Medium.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
AI-suggested
1. Monitor Samsung’s official security advisories and apply the SMR September 2025 Release 1 or later updates promptly once available to remediate the vulnerability. 2. Enforce strict device access controls to prevent unauthorized local access, including strong lock screen policies, biometric authentication, and device encryption. 3. Implement mobile device management (MDM) solutions to monitor and restrict installation of unauthorized applications that could exploit local privilege vulnerabilities. 4. Educate users about the risks of installing untrusted applications or granting excessive permissions that could facilitate local privilege escalation. 5. Regularly audit device usage and licensing compliance to detect anomalies in theme or trial item usage that may indicate exploitation attempts. 6. For high-security environments, consider restricting physical access to devices and employing endpoint detection and response (EDR) tools capable of identifying suspicious local activity. 7. Collaborate with Samsung support channels to obtain interim mitigation guidance if patches are delayed.
Description
Improper privilege management in ThemeManager prior to SMR Sep-2025 Release 1 allows local privileged attackers to reuse trial items.