Security readout for executives and security teams
Plain-English summary
CVE-2021-0564 is an Android 11 local privilege escalation issue in CryptoPlugin.cpp. A race condition can cause use-after-free during decrypt handling. The public record says exploitation needs System execution privileges and no user interaction, limiting typical external exposure but still relevant for unpatched Android 11 devices.
Executive priority
Treat this as a targeted mobile patching priority, not an internet-wide emergency. The main business risk is persistence or privilege increase on already-compromised or highly privileged Android 11 devices.
Technical view
The issue is a possible use-after-free in decrypt of CryptoPlugin.cpp caused by a race condition. The stated impact is local escalation of privilege on Android 11. The source bundle provides no CVSS score, CWE, exploit detail, or named patch beyond the Android/Pixel June 2021 bulletin reference.
Likely exposure
Exposure is limited to Android 11 systems covered by the referenced Android/Pixel June 2021 security bulletin. Organizations should prioritize Android 11 devices that have not received the June 2021 or later relevant security update.
Exploitation context
The source bundle does not report active exploitation, and KEV is false. Public details state no user interaction is needed, but System execution privileges are needed, which materially constrains attacker reach.
Researcher notes
Evidence is sparse. The public CVE description identifies the code area, bug class, affected version, privilege context, and no-interaction property, but does not include CVSS, CWE mapping, proof of exploitation, or detailed remediation language.
Mitigation direction
- Apply the relevant Android or Pixel June 2021 security update guidance.
- Inventory Android 11 devices and identify missing June 2021 or later security patch levels.
- Check vendor or OEM guidance for device-specific update availability.
- Retire or isolate Android 11 devices that cannot receive security updates.
Validation and detection
- Confirm Android version and security patch level on managed devices.
- Compare device patch status against the June 2021 Android/Pixel bulletin.
- Review mobile device management inventory for unsupported Android 11 endpoints.
- Document exceptions where OEM fixes are unavailable or unverified.
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-2021-0564 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.