Security readout for executives and security teams
Plain-English summary
This Android flaw could let a malicious local app trick a user into tapping something unintended, potentially raising privileges. It affects Android 10, 11, and 12. Exploitation requires user interaction and no extra execution privileges. The provided sources do not show active exploitation.
Executive priority
Treat this as a patch-compliance issue for Android fleets, not an emergency incident unless local signals suggest abuse. The business risk is privilege escalation after user interaction on unpatched devices.
Technical view
CVE-2021-39691 is a WindowManager tapjacking issue caused by an incorrect window flag during user input processing. Android describes the impact as local escalation of privilege. Affected versions are Android 10, Android 11, and Android 12. No CVSS, CWE, or detailed exploit mechanics are provided in the source bundle.
Likely exposure
Exposure is most likely on Android 10, 11, or 12 devices that have not received the relevant June 2022 Android security bulletin fixes from Google, OEMs, or carriers.
Exploitation context
The CVE description states exploitation requires user interaction and no additional execution privileges. The source bundle marks KEV as false and provides no cited evidence of active exploitation or public weaponization.
Researcher notes
Available public detail is limited to Android’s brief description and bulletin reference. Avoid assuming affected components beyond WindowManager or exploitability beyond local, user-assisted tapjacking-based privilege escalation.
Mitigation direction
- Apply Android security updates that include the June 2022 bulletin fixes.
- Confirm OEM and carrier builds include the relevant Android security bulletin update.
- Prioritize managed Android 10, 11, and 12 devices for patch verification.
- Retire or restrict devices that cannot receive relevant security updates.
Validation and detection
- Inventory Android 10, 11, and 12 devices across managed fleets.
- Check each device security patch level against vendor update guidance.
- Verify OEM advisories or release notes reference June 2022 Android security fixes.
- Review MDM compliance data for devices missing applicable 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-2021-39691 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/2022-06-01CVE 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.