Security readout for executives and security teams
Plain-English summary
This CVE affects Samsung Dex on Samsung mobile devices before the May 2021 Samsung Mobile Security Release. A local attacker could change a backup path setting and obtain sensitive information. It is not described as remotely exploitable, and the supplied sources do not show active exploitation.
Executive priority
Treat this as a patch compliance issue, not an emergency incident by default. The business risk is sensitive information exposure from local access on outdated Samsung devices, so priority depends on fleet size, device age, and whether corporate data is present.
Technical view
Samsung Dex had improper protection of backup path configuration before SMR MAY-2021 Release 1. The CVSS vector is local, low complexity, no privileges, no user interaction, unchanged scope, and low confidentiality impact only. Samsung lists affected Android P, Q, and R Samsung mobile devices.
Likely exposure
Exposure is limited to Samsung mobile devices running affected Samsung Dex builds before SMR MAY-2021 Release 1 on Android 9, 10, or 11. Risk is most relevant for unmanaged or legacy Samsung fleets that may not have received 2021 security updates.
Exploitation context
The source bundle reports local attack conditions and sensitive information exposure through path changes. It does not cite CISA KEV listing, public active exploitation, or remote exploitation. Evidence is limited to the CVE description, Samsung advisory, and linked research reference.
Researcher notes
The vulnerability maps to CWE-200 and has CVSS 3.1 score 4.0. The available evidence does not identify specific files, data types, proof-of-concept status, or fixed build numbers beyond Samsung SMR MAY-2021 Release 1.
Mitigation direction
- Apply Samsung SMR MAY-2021 Release 1 or later to affected devices.
- Prioritize Samsung devices running Android 9, 10, or 11 without current security updates.
- Use MDM inventory to identify unsupported or noncompliant Samsung devices.
- Check Samsung guidance before assuming alternative mitigations exist.
- Retire or isolate devices that cannot receive vendor security updates.
Validation and detection
- Inventory Samsung mobile devices and record Android version and security patch level.
- Confirm Samsung Dex-enabled devices are at or beyond the May 2021 security release.
- Review MDM compliance reports for devices missing Samsung security maintenance releases.
- Validate exceptions for legacy devices with compensating controls or retirement plans.
- Do not use exploit testing unless authorized and based on vendor-safe procedures.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2021-25392 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
- Medium
- CVSS
- 4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N2.51.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.oversecured.com/Two-weeks-of-securing-Samsung-devices-Part-1/CVE reference · x_refsource_MISC
- https://security.samsungmobile.com/securityUpdate.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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.