Security readout for executives and security teams
Plain-English summary
CVE-2021-0877 is a critical Android SoC vulnerability with a 9.8 CVSS score. The provided sources do not explain the flaw, impacted chipsets, or attack path beyond Android SoC scope. Treat it as urgent for Android device fleets, especially where vendor security updates lag.
Executive priority
Prioritize as critical for managed Android fleets because official scoring indicates full confidentiality, integrity, and availability impact. Business urgency depends on device count, patch lag, and whether OEM support is still available.
Technical view
The record identifies Android SoC as affected and assigns CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. That implies network-reachable exploitation could require no privileges or user interaction and could affect confidentiality, integrity, and availability. No CWE or root-cause detail is supplied.
Likely exposure
Exposure is likely limited to Android devices containing affected SoC components and lacking the relevant May 2023 Android security updates. The source bundle does not identify specific chipsets, OEMs, models, or Android OS versions.
Exploitation context
The bundle does not show CISA KEV listing or cited evidence of active exploitation. Severity is high because the CVSS vector indicates possible unauthenticated network attack surface, but exploit availability is not established here.
Researcher notes
The public record is sparse: no CWE, root cause, affected chipset list, or exploit detail is provided in the bundle. Validation should focus on Android bulletin mapping, OEM firmware status, and vendor patch provenance rather than assumptions.
Mitigation direction
- Apply Android security updates from May 2023 or later where OEM support confirms coverage.
- Check OEM, carrier, and SoC vendor advisories for device-specific patch availability.
- Prioritize unsupported or delayed-update Android devices for replacement or isolation.
- Use MDM policy to require current Android security patch levels.
Validation and detection
- Inventory Android devices and record model, OEM, SoC, and security patch level.
- Confirm whether each OEM build includes the May 2023 Android SoC fixes.
- Flag devices below the relevant Android security patch level for remediation.
- Monitor official Android and vendor advisories for clarified affected component details.
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-2021-0877 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/2023-05-01CVE reference
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.