Security readout for executives and security teams
Plain-English summary
This Android issue could let a local attacker bypass permission checks and gain higher privileges on Android 12 or 12L devices. The source does not provide CVSS, CWE, or detailed patch metadata. No cited source indicates active exploitation.
Executive priority
Treat this as a focused mobile hygiene issue, not an internet-scale emergency. Prioritize patch verification for Android 12 and 12L fleets because the impact is privilege escalation and the source notes no user interaction is required.
Technical view
CVE-2021-39799 is an improper input validation issue in AttributionSource.java. The reported impact is local escalation of privilege through a possible permission bypass, requiring no user interaction and no additional execution privileges. Affected versions listed are Android 12 and Android 12L.
Likely exposure
Exposure is limited to Android 12 and Android 12L devices that have not received the relevant Android security update from the April 2022 bulletin or vendor guidance.
Exploitation context
The CVE record describes local privilege escalation without user interaction. The source bundle marks KEV as false, and no provided source confirms active exploitation or public exploit availability.
Researcher notes
The public bundle is sparse: no CVSS vector, CWE, proof of concept, or detailed commit information is included. Analysis should stay tied to Android ID A-200288596 and the April 2022 bulletin until vendor details are reviewed.
Mitigation direction
- Check OEM and Android April 2022 security bulletin guidance for affected devices.
- Prioritize updates for Android 12 and 12L endpoints.
- Verify device patch levels through MDM or endpoint inventory.
- Restrict untrusted app installation where Android 12 or 12L remains unpatched.
Validation and detection
- Inventory Android 12 and 12L devices across managed environments.
- Confirm each device security patch level against vendor guidance.
- Review MDM compliance reports for unpatched Android 12 or 12L devices.
- Track exception handling for devices that cannot receive updates.
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.
CVE-2021-39799 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://source.android.com/security/bulletin/2022-04-01CVE 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.