Security readout for executives and security teams
Plain-English summary
CVE-2018-9477 is a high-severity Android Settings flaw in Developer options. A person with local access and some user interaction could bypass an authentication check and gain elevated privileges on affected Android 8 and 8.1 devices.
Executive priority
Treat as high priority for remaining Android 8 or 8.1 fleets, especially shared, unmanaged, or high-trust devices. Business urgency is lower where those versions are absent or fully patched.
Technical view
The issue is a missing permission check in the Android Settings app Developer options area. The CVSS 3.1 vector is AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating local access, low complexity, no privileges, required user interaction, and high impact.
Likely exposure
Exposure is limited to Google Android 8 and 8.1 according to the provided affected-product data. The bundle does not identify other vendors, device models, or custom Android distributions as affected.
Exploitation context
The source bundle does not show known active exploitation, and CISA KEV status is false. Exploitation is local and requires user interaction; the public data provided does not include exploit details.
Researcher notes
The provided evidence is concise and does not include proof-of-concept details, patch commits, or device-specific advisories. Validate against the Android bulletin and device-vendor update channels before broadening affected-scope claims.
Mitigation direction
- Identify Android 8 and 8.1 devices in managed inventory.
- Check Google's September 2018 Android Security Bulletin for vendor patch guidance.
- Apply applicable Android security updates from the device vendor or carrier.
- Prioritize replacement or isolation where affected devices cannot receive fixes.
Validation and detection
- Confirm device Android version and security patch level from inventory or MDM.
- Review whether Developer options are enabled on affected devices.
- Verify applicable vendor bulletin coverage for each device build.
- Document devices that cannot be updated and track compensating controls.
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.
CWE-294: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-9477 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
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/2018-09-01CVE 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.
Authentication Bypass by Capture-replay
Authentication Bypass by Capture-replay represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.