Security readout for executives and security teams
Plain-English summary
CVE-2018-9434 is an Android issue that could let a local, already-running attacker bypass ASLR and escalate privileges. It requires no user interaction but does require local low-privilege access. The available sources do not show active exploitation.
Executive priority
Treat as a high-priority mobile fleet hygiene issue, especially for legacy Android devices. It is serious after local compromise, but the source bundle does not support internet-scale or active exploitation claims.
Technical view
The record describes multiple Parcel.cpp functions allowing an ASLR bypass, potentially enabling local escalation of privilege. CVSS 3.1 is 7.8 high with local attack vector, low complexity, low privileges, and no user interaction. The affected entry names Google Android Android Kernel, but details are sparse.
Likely exposure
Exposure is most relevant to Android or Pixel devices that have not received the security updates associated with the July 2018 Pixel bulletin. The bundle does not provide detailed version ranges beyond Android Kernel.
Exploitation context
This is a local privilege escalation scenario, not a remote entry point. An attacker would already need code execution or low-privilege local access. KEV is false and the provided sources do not cite active exploitation.
Researcher notes
CWE-276 is listed. The description names Parcel.cpp while the affected entry names Android Kernel, so component attribution should be handled carefully. Do not infer broader product impact beyond the supplied Android and Pixel references.
Mitigation direction
- Apply relevant Android or Pixel security updates from vendor guidance.
- Verify managed devices have a patch level including the July 2018 Pixel fixes.
- Prioritize unsupported or unmanaged Android devices for replacement or isolation.
- If patch status is unclear, check Google and device OEM guidance.
Validation and detection
- Inventory Android and Pixel devices with OS, kernel, and patch-level data.
- Compare device patch levels against the July 2018 Pixel security bulletin.
- Confirm MDM reports no devices on vulnerable or unsupported builds.
- Review endpoint telemetry for suspicious local privilege escalation behavior.
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
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CWE-276: Exact CWE lookup
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Open ATT&CK lookupCVE-2018-9434 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/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:L/AC:L/PR:L/UI:N/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:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/security/bulletin/pixel/2018-07-01CVE 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.
Incorrect Default Permissions
Incorrect Default Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.