Security readout for executives and security teams
Plain-English summary
CVE-2021-0566 is an Android 11 issue that could let a local actor disclose information through an out-of-bounds read in audio-related TimeCheck code. The source says System execution privileges are required, so exposure appears limited to already highly privileged local contexts.
Executive priority
Treat as a focused mobile patch-management item, not an emergency based on the provided evidence. The privilege requirement lowers urgency, but information disclosure in system-level Android components still warrants closure through normal security update cycles.
Technical view
The reported flaw is a missing bounds check in accessAudioHalPidscpp of TimeCheck.cpp, causing a possible out-of-bounds read. The stated impact is local information disclosure on Android 11 with System execution privileges required and no user interaction needed.
Likely exposure
Likely exposure is Android 11 devices covered by the referenced Android/Pixel security bulletin. The bundle does not identify other Android versions, OEM-specific builds, or exact patch levels, so asset validation must rely on device security update status and vendor guidance.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked KEV. Exploitation is described as local, requiring System execution privileges, with no user interaction needed. That limits broad remote risk but matters for defense-in-depth on managed Android fleets.
Researcher notes
Evidence is sparse: no CVSS, CWE, commit, patch diff, or OEM matrix is provided in the bundle. Do not assume remote exploitability or broader version impact. Validation should center on Android 11 build provenance, security patch level, and vendor bulletin mapping.
Mitigation direction
- Check Google and device-vendor guidance for CVE-2021-0566 patch availability.
- Apply relevant Android or Pixel security updates to affected Android 11 devices.
- Prioritize managed devices that process sensitive audio or enterprise data.
- Track OEM patch levels because Android fixes may arrive through device vendors.
Validation and detection
- Inventory Android 11 devices and record their security patch levels.
- Compare device patch status against the June 2021 Android/Pixel bulletin guidance.
- Confirm whether OEM advisories mention CVE-2021-0566 for deployed models.
- Document any unsupported Android 11 devices needing compensating risk treatment.
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-2021-0566 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/pixel/2021-06-01CVE 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.