Security readout for executives and security teams
Plain-English summary
CVE-2021-25399 is a Samsung Mobile Smart Manager issue where versions before 11.0.05.0 were configured improperly, allowing an attacker to access a file with system-level privilege. The public bundle does not specify device models, attack prerequisites, CVSS score, or active exploitation.
Executive priority
Handle as a targeted mobile fleet remediation item, not an evidence-backed emergency. The business priority is confirming whether affected Smart Manager versions exist and ensuring supported Samsung devices have received the vendor update.
Technical view
The CVE maps to CWE-285 and describes improper configuration in Samsung Mobile Smart Manager before 11.0.05.0. The stated impact is file access with system privilege. Public data provided does not define attack vector, authentication requirements, affected CPEs, or severity scoring.
Likely exposure
Exposure is limited to Samsung Mobile environments using Smart Manager versions prior to 11.0.05.0. The sources do not identify specific Samsung device models, Android versions, regions, or deployment channels, so asset validation is required.
Exploitation context
The source bundle does not show CISA KEV listing, active exploitation, public exploit use, or weaponized details. Treat exploitation likelihood as unproven from the provided evidence, while recognizing that system-privilege file access could matter on affected devices.
Researcher notes
Public evidence is sparse: no CVSS, CPEs, model list, attack vector, or prerequisite detail is included. Analysis should stay anchored to the version boundary, CWE-285 classification, and Samsung bulletin until additional vendor data is available.
Mitigation direction
- Identify Samsung Mobile devices running Smart Manager before 11.0.05.0.
- Update Smart Manager to 11.0.05.0 or later where vendor-supported.
- Review Samsung’s May 2021 mobile security bulletin for device-specific guidance.
- Prioritize managed mobile fleets and high-risk users for verification.
- Retire or isolate unsupported affected devices if updates are unavailable.
Validation and detection
- Inventory Samsung Mobile assets and record Smart Manager versions.
- Confirm whether any installation is older than 11.0.05.0.
- Verify applicable devices received Samsung’s relevant May 2021 security update.
- Document exceptions where model or update availability cannot be confirmed.
- Recheck version state after remediation through MDM or device inspection.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-285: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-25399 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=5CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.