Security readout for executives and security teams
Plain-English summary
This flaw affects Android kernel code in the MTK WLAN driver. A nearby attacker could potentially trigger a memory corruption issue over the wireless attack surface and gain elevated privileges without user interaction. The provided sources do not show active exploitation.
Executive priority
Treat this as high priority for fleets with older Android or MediaTek-based devices, especially where devices remain unsupported. The business risk is privilege escalation without user interaction, but current evidence does not establish active exploitation.
Technical view
CVE-2018-9373 is a CWE-787 out-of-bounds write in TdlsexRxFrameHandle caused by a missing bounds check. CVSS 3.1 rates it 8.8 with adjacent-network access, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely limited to Android devices or builds that include the vulnerable MTK WLAN driver code and have not received the relevant Android security bulletin fixes. The bundle does not identify specific device models, chipsets, or OEM build numbers.
Exploitation context
The CVSS vector indicates adjacent-network reachability, no required credentials, and no user interaction. The source bundle says remote escalation of privilege is possible. It is not listed as KEV, and no cited source in the bundle confirms active exploitation.
Researcher notes
The public bundle gives vulnerability class, function name, Android kernel context, CVSS, and bulletin reference, but not a patch diff, affected device matrix, or exploit telemetry. Avoid broad Android-wide claims without OEM-specific confirmation.
Mitigation direction
- Apply relevant Android security updates from the June 2018 bulletin or OEM guidance.
- Prioritize legacy Android devices using MediaTek WLAN components for patch verification.
- Check vendor advisories before assuming a compensating control or workaround exists.
- Retire or isolate devices that cannot receive confirmed security updates.
Validation and detection
- Inventory Android devices by model, build, kernel, chipset, and security patch level.
- Confirm whether each device includes the June 2018 Android security bulletin fixes.
- Review OEM release notes for CVE-2018-9373 or related MTK WLAN driver fixes.
- Use MDM or EMM reporting to identify unpatched or unsupported 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.
CWE-787: 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 lookupCVE-2018-9373 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:A/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/2018-06-01CVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.