Security readout for executives and security teams
Plain-English summary
This Android flaw could let a remote attacker read information from affected devices without user interaction or extra privileges. The public sources do not provide a CVSS score, exploit details, or confirmed exploitation. Treat exposure seriously where Android 9, 10, or 11 devices have not received the relevant June 2021 Android security fixes.
Executive priority
Make this a fleet hygiene priority, especially for older Android devices. Business urgency is driven by remote information disclosure potential and no user interaction requirement, but public evidence here does not support claiming active exploitation or critical severity.
Technical view
CVE-2021-0522 is a possible out-of-bounds read caused by use-after-free in ConnectionHandler::SdpCb in connection_handler.cc. Android describes the impact as remote information disclosure with no additional execution privileges and no user interaction required. Affected versions listed are Android 9, Android 10, and Android 11.
Likely exposure
Exposure is most likely on Android 9, 10, and 11 devices that missed vendor or OEM security updates covering the June 2021 Android Security Bulletin. Enterprise risk depends on fleet age, OEM patch delivery, carrier delays, and whether unsupported devices remain in service.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. Android states exploitation does not require user interaction or additional execution privileges, but the provided sources do not include exploit mechanics, proof-of-concept status, or observed campaign evidence.
Researcher notes
Evidence is limited: no CVSS, CWE, detailed patch diff, or exploit status is provided in the bundle. Track Android ID A-174182139, affected Android versions 9 through 11, and vendor bulletin coverage. Validate remediation through device patch level and OEM-specific advisories.
Mitigation direction
- Check Android and OEM guidance for CVE-2021-0522 remediation coverage.
- Prioritize patching Android 9, 10, and 11 devices missing June 2021 security fixes.
- Remove or isolate unsupported devices that cannot receive vendor security updates.
- Use MDM policy to require minimum Android security patch levels.
Validation and detection
- Inventory Android devices by OS version and security patch level.
- Identify Android 9, 10, and 11 devices below the June 2021 patch coverage.
- Confirm OEM bulletins map their builds to CVE-2021-0522 fixes.
- Review exception lists for unmanaged, carrier-delayed, or unsupported devices.
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-2021-0522 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.