Security readout for executives and security teams
Plain-English summary
Samsung Internet before version 14.0.1.20 had an intent redirection flaw that could let an attacker trigger a privileged action through the browser. The public record does not provide CVSS scoring, detailed attack prerequisites, or evidence of exploitation, so urgency should focus on identifying outdated app versions and updating them.
Executive priority
Treat this as a mobile browser hygiene issue with uncertain severity. It should be addressed through update compliance, especially for managed Android fleets, but the public evidence does not support an emergency response claim.
Technical view
CVE-2021-25400 is mapped to CWE-926 and describes intent redirection in Samsung Internet prior to 14.0.1.20. The stated impact is execution of a privileged action. Public details are sparse: no CVSS vector, affected platform range, proof-of-exploit status, or detailed remediation notes beyond the fixed-version boundary are provided.
Likely exposure
Exposure is likely limited to Android devices running Samsung Internet versions earlier than 14.0.1.20. The source bundle does not identify other Samsung apps, operating system versions, or non-Samsung browsers as affected.
Exploitation context
The source bundle does not indicate active exploitation, and CISA KEV status is false. The public description only states intent redirection leading to privileged action, without exploit prerequisites or attack chain details.
Researcher notes
The record lacks CVSS, vulnerable component details, and exploit prerequisites. The CWE suggests Android component exposure or intent handling risk, but validation should avoid assumptions beyond confirming affected app versions and reviewing Samsung advisory context.
Mitigation direction
- Update Samsung Internet to version 14.0.1.20 or later.
- Use managed mobile inventory to find outdated Samsung Internet installations.
- Check Samsung Mobile security guidance for any device-specific update instructions.
- Prioritize corporate-managed Android devices with Samsung Internet installed.
Validation and detection
- Inventory Samsung Internet versions across managed Android devices.
- Confirm no managed device runs a version earlier than 14.0.1.20.
- Review mobile security tooling for Samsung Internet update compliance.
- Check whether Samsung Internet is permitted or required in mobile policy.
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-926: 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-2021-25400 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 Export of Android Application Components
Improper Export of Android Application Components represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.