Security readout for executives and security teams
Plain-English summary
CVE-2021-39797 is an Android 12 and Android 12L privilege-escalation issue in LauncherApps.java. The public record says a local attacker could gain elevated privileges without user interaction. The source bundle does not provide CVSS, severity, or detailed impact scope.
Executive priority
Treat this as a patch-compliance issue for Android 12/12L fleets. Business urgency depends on the number of unpatched devices with access to corporate data.
Technical view
The issue is described as a logic error across several LauncherApps.java functions causing local escalation of privilege. Android lists affected versions as Android 12 and Android 12L, with Android ID A-209607104. No exploit mechanics are provided in the sources.
Likely exposure
Exposure is limited to Android 12 and Android 12L devices that have not received the relevant Android/OEM security update covering this bulletin item.
Exploitation context
The bundle does not show CISA KEV inclusion or any cited active exploitation. Exploitation is described as local, requiring no additional execution privileges and no user interaction, but public evidence is incomplete.
Researcher notes
Public details are sparse: no CVSS, CWE, exploit status, or code-level patch details are included in the provided bundle. Analysis should stay anchored to Android’s bulletin and CVE record.
Mitigation direction
- Check OEM and Android security bulletin guidance for CVE-2021-39797.
- Prioritize security updates for Android 12 and Android 12L devices.
- Verify managed devices have received the applicable April 2022 Android security bulletin fixes.
- Restrict unmanaged or outdated Android devices from sensitive enterprise access where feasible.
Validation and detection
- Inventory Android 12 and Android 12L devices in fleet management tools.
- Confirm each device security patch level against OEM guidance for the April 2022 bulletin.
- Track exceptions for devices that cannot receive security updates.
- Review mobile EDR or MDM alerts for suspicious local privilege behavior.
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-2021-39797 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.