Security readout for executives and security teams
Plain-English summary
CVE-2021-0545 is an Android 11 NFC server flaw where missing bounds checking may allow memory corruption. The source describes possible local privilege escalation and says user interaction is not required. Public data in the bundle does not provide CVSS, CWE, or active exploitation evidence.
Executive priority
Treat this as a patch verification item for Android 11 fleets, not an emergency unless exposed devices are unpatched and business-critical. The absence of CVSS and exploitation evidence limits urgency, but local privilege escalation bugs still matter on managed mobile endpoints.
Technical view
The flaw is in phNxpNciHal_print_res_status in phNxpNciHal.cc. A missing bounds check may cause an out-of-bounds write. The affected product listed is Android 11. The source states possible local escalation of privilege in the NFC server and System execution privileges needed.
Likely exposure
Exposure is limited to Android 11 devices containing the affected NFC server code. Risk depends on device model, OEM patch level, NFC stack implementation, and whether June 2021 Android or Pixel security fixes were applied.
Exploitation context
The source says exploitation is local, needs no user interaction, and involves System execution privileges. The provided bundle does not identify public exploit code, in-the-wild exploitation, or CISA KEV listing.
Researcher notes
Key gaps are CVSS, CWE classification, detailed affected build ranges, and vendor-specific remediation status. The description gives the vulnerable function and bug class but not enough detail to validate safely beyond patch-level and source-code review.
Mitigation direction
- Check Android or OEM guidance for CVE-2021-0545 applicability.
- Apply relevant June 2021 or later Android security updates.
- Confirm Pixel devices follow the June 2021 Pixel bulletin guidance.
- Prioritize managed Android 11 devices with NFC enabled.
- Retire or isolate unsupported Android 11 devices lacking updates.
Validation and detection
- Inventory Android 11 devices and OEM patch levels.
- Check whether June 2021 security updates are installed.
- Review MDM records for devices with NFC enabled.
- Verify vendor advisories map the device build to CVE-2021-0545.
- Document exceptions for unsupported or unpatchable 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-2021-0545 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.