Security readout for executives and security teams
Plain-English summary
CVE-2021-25398 is a Bixby Voice issue on Samsung mobile devices. Versions before 3.1.12 could let an attacker access contacts through intent redirection. The public sources do not provide CVSS scoring, exploit details, or evidence of active exploitation.
Executive priority
Treat this as a privacy-impacting mobile application update, not a confirmed emergency. Prioritize fleets using Samsung devices, especially executive, sales, recruiting, or support users whose contacts contain sensitive business relationships.
Technical view
The CVE record describes an intent redirection vulnerability in Samsung Mobile Bixby Voice prior to 3.1.12. The stated impact is access to contacts. The source bundle lists CWE-561 and no CVSS vector. Technical preconditions and attack path are not described in the cited sources.
Likely exposure
Exposure is likely limited to Samsung mobile devices with Bixby Voice installed and running a version earlier than 3.1.12. The bundle does not identify specific device models, Android versions, or deployment conditions.
Exploitation context
No cited source states active exploitation, and the CVE is not marked in KEV. Public details are sparse, so exploitation likelihood and prerequisites cannot be assessed from this bundle alone.
Researcher notes
The public record lacks CVSS, exploitability details, and device-specific scope. Validation should focus on application version evidence and Samsung advisory alignment. Avoid assuming broader Samsung platform exposure beyond Bixby Voice before 3.1.12.
Mitigation direction
- Update Bixby Voice to version 3.1.12 or later.
- Review Samsung's May 2021 mobile security guidance.
- Inventory Samsung devices where Bixby Voice is installed.
- Prioritize managed devices with contact data access.
- Use vendor guidance for any additional mitigations.
Validation and detection
- Confirm installed Bixby Voice versions on managed Samsung devices.
- Verify devices are updated to 3.1.12 or later.
- Check MDM inventory for outdated Samsung application versions.
- Review whether contact access is restricted by policy.
- Document exceptions where updates cannot be applied.
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-561: 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-2021-25398 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.
Dead Code
Dead Code represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.