Security readout for executives and security teams
Plain-English summary
CVE-2021-0496 is an Android SoC memory management driver bug. A local attacker could corrupt memory after it is freed and potentially gain higher privileges. The source says exploitation needs no user interaction and no additional execution privileges. The public bundle does not identify specific devices, chipsets, or a CVSS score.
Executive priority
Treat this as a fleet hygiene and patch verification issue. The vulnerability enables local privilege escalation, which can increase impact after an attacker gains code execution on a device. Urgency depends on whether affected Android SoC builds remain in use and unpatched.
Technical view
The issue is described as a use-after-free in an Android memory management driver, leading to possible memory corruption and local escalation of privilege. The affected product is listed only as Android SoC. No CWE, CVSS vector, chipset mapping, exploit details, or vendor-specific remediation text is included in the provided bundle.
Likely exposure
Exposure is limited to Android devices using affected SoC components covered by the May 2021 Android Security Bulletin. The bundle does not name OEMs, chipsets, kernels, or build fingerprints, so device-level exposure requires vendor bulletin or patch-level confirmation.
Exploitation context
The sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. The described attack is local privilege escalation, not remote compromise. No user interaction is required, but the sources do not explain the initial local access path.
Researcher notes
The public data is sparse: Android SoC is the only affected version label, and no CVSS, CWE, chipset list, proof-of-concept status, or detailed fix note is provided. Avoid assuming exploitability across all Android devices without OEM or chipset confirmation.
Mitigation direction
- Review the Android May 2021 Security Bulletin for CVE-2021-0496 applicability.
- Apply Android or OEM updates that include the relevant May 2021 security fixes.
- Ask device vendors for chipset-specific exposure and patch confirmation.
- Prioritize managed Android devices with outdated security patch levels.
Validation and detection
- Inventory Android devices and record OEM, model, build, and security patch level.
- Check whether devices received the May 2021 Android security fixes or later applicable updates.
- Compare fleet devices against OEM security bulletins for CVE-2021-0496 coverage.
- Document unsupported devices where vendor patch status cannot be confirmed.
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-2021-0496 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/2021-05-01CVE 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.