Security readout for executives and security teams
Plain-English summary
CVE-2018-9349 is an Android out-of-bounds read issue that can crash affected devices or services. It is a denial-of-service risk, not a data theft or code execution issue based on the provided sources. Exploitation requires user interaction, lowering urgency but still warranting patch verification for older Android fleets.
Executive priority
Treat this as a moderate legacy mobile availability risk. It should not displace actively exploited or code-execution vulnerabilities, but organizations with older Android devices should verify patch coverage and remove unsupported endpoints from sensitive workflows.
Technical view
The flaw is a missing bounds check in mv_err_cost within mcomp.c, leading to a possible out-of-bounds read. CVSS 3.1 is 6.5 with network attack vector, low complexity, no privileges, required user interaction, and high availability impact. Affected Android versions listed are 7, 7.1.1, 7.1.2, 8, and 8.1.
Likely exposure
Exposure is most likely in legacy Android or Pixel environments still running Android 7.x or 8.x without the relevant vendor security update. Modern supported Android devices are less likely exposed, but the provided bundle does not confirm unaffected patch levels beyond listed affected versions.
Exploitation context
The bundle does not report active exploitation, and KEV status is false. Exploitation requires user interaction and no additional privileges. The stated impact is denial of service through an out-of-bounds read, not confidentiality or integrity compromise.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and Android Pixel bulletin reference. The bundle names the vulnerable function and affected Android versions but does not provide detailed exploit conditions, affected components, or proof of active exploitation.
Mitigation direction
- Apply the applicable Android or Pixel security update from vendor guidance.
- Prioritize legacy Android 7.x and 8.x devices for patch verification.
- Retire or isolate devices that cannot receive supported security updates.
- Monitor vendor advisories for any additional affected build or patch details.
Validation and detection
- Inventory Android devices and record OS version and security patch level.
- Identify devices running Android 7, 7.1.1, 7.1.2, 8, or 8.1.
- Compare device patch status against the June 2018 Pixel security bulletin.
- Confirm unsupported devices are removed, isolated, or risk-accepted.
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
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2018-9349 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/docs/security/bulletin/pixel/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 Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.