Security readout for executives and security teams
Plain-English summary
CVE-2021-0511 is an Android flaw in Dex2oat that could let a local attacker inject bytecode into an app and gain higher privileges. Android 9, 10, and 11 are listed as affected. The source bundle provides no CVSS score and no evidence of known exploited activity.
Executive priority
Treat this as a mobile endpoint hygiene issue with moderate urgency. It is privilege escalation, not confirmed remote compromise, but unpatched legacy Android devices can increase impact after an initial local foothold.
Technical view
The issue is improper input validation in Dex2oat within dex2oat.cc. The CVE describes possible bytecode injection into an app, leading to local escalation of privilege without additional execution privileges or user interaction. No CWE, CVSS vector, exploit details, or vendor workaround is provided in the supplied sources.
Likely exposure
Organizations may be exposed where Android 9, 10, or 11 devices have not received the relevant June 2021 Android security bulletin fixes from Google, OEMs, or carriers.
Exploitation context
The supplied sources describe local privilege escalation and state that user interaction is not required. They do not show remote exploitation, public exploitation, or CISA KEV listing, so active exploitation should not be assumed.
Researcher notes
Evidence is limited to the CVE description and Android bulletin reference. Focus validation on affected Android versions and patch levels. Do not infer affected downstream products, exploit availability, or specific fixes beyond vendor security updates.
Mitigation direction
- Apply Android security updates covering the June 2021 bulletin for affected Android versions.
- Verify OEM or carrier firmware includes the relevant Android security bulletin fixes.
- Prioritize unsupported Android 9, 10, and 11 devices for upgrade or replacement.
- Check vendor guidance for device-specific patch availability and deployment steps.
Validation and detection
- Inventory Android devices and record OS version and security patch level.
- Identify Android 9, 10, and 11 devices below the applicable June 2021 patch level.
- Confirm OEM firmware release notes reference the June 2021 Android security bulletin.
- Track exceptions for devices that cannot receive vendor security 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-2021-0511 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/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.