BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2018
CVE-2018-9438High confidence

This could lead to a local denial of service of security updates with no additional execution privileges needed

Google Inc. · Android

5.0MediumCVSS 3.0
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 16 Sep 2024

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.19% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Google Inc. Android and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2018-21032

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

When a device connects only over WiFi VPN, the device may not receive security updates due to some incorrect checks. This could lead to a local denial of service of security updates with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android Versions: Android-8.1 Android ID: A-78644887.

What

When a device connects only over WiFi VPN, the device may not receive security updates due to some incorrect checks. This could lead to a local denial of service of security updates with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android Versions: Android-8.1 Android ID: A-78644887.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

When a device connects only over WiFi VPN, the device may not receive security updates due to some incorrect checks. This could lead to a local denial of service of security updates with no additional execution privileges needed. User interaction is needed for exploitation. Product: Android Versions: Android-8.1 Android ID: A-78644887.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → vulnerable operation → disrupt the affected service
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Denial of service
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

CERT-FR · French · CERTFR-2018-AVI-372Multiples vulnérabilités dans Google Android

.cve.org/CVERecord?id=CVE-2018-5904 Référence CVE CVE-2018-5905 https://www.cve.org/CVERecord?id=CVE-2018-5905 Référence CVE CVE-2018-5908 https://www.cve.org/CVERecord?id=CVE-2018-5908 Référence CVE CVE-2018-5909 https://www.cve.org/CVERecord?id=CVE-2018-5909 Référence CVE CVE-2018-5910 https://www.cve.org/CVERecord?id=CVE-2018-5910 Référence CVE CVE-2018-9427 https://www.cve.org/CVERecord?id=CVE-2018-9427 Référence CVE CVE-2018-9435 https://www.cve.org/CVERecord?id=CVE-2018-9435 Référence CVE CVE-2018-9436 https://www.cve.org/CVERecord?id=CVE-2018-9436 Référence CVE CVE-2018-9437 https://www.cve.org/CVERecord?id=CVE-2018-9437 Référence CVE CVE-2018-9438 https://www.cve.org/CVERecord?id=CVE-2018-9438 Référence CVE CVE-2018-9439 https://www.cve.org/CVERecord?id=CVE-2018-9439 Référence CVE CVE-2018-9441 https://www.cve.org/CVERecord?id=CVE-2018-9441 Référence CVE CVE-2018-9444 https://www.cve.org/CVERecord?id=CVE-2018-9444 Référence CVE CVE-2018-9445 https://www.cve.org/CVERecord?id=CVE-2018-9445 Référence CVE CVE-2018-9446 https://www.cve.org/CVERecord?id=CVE-2018-9446 Référence CVE CVE-2018-9447 https://www.cve.org/CVERecord?id=CVE-2018-9447 Référence CVE CVE-2018-9448 https://www.cve.org/CVERecord?id=CVE-2018-9448 Référence CVE CVE-2018-9449 https://www.cve.org/CVERecord?id=CVE-2018-9449 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2018-011974Android における認可・権限・アクセス制御に関する脆弱性

Android には、認可・権限・アクセス制御に関する脆弱性が存在します。 本脆弱性は、Android ID: A-78644887 として公開されています。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Android: Android-8.1
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 6 Nov 2018 · Last source change 16 Sept 2024, 20:52 UTC · CWE not yet assigned

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2018-21032
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD modified after enrichment

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. ENISA EUVD mappingEUVD-2018-21032 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2018-21032"}
    ENISA EUVD ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added patch: source.android.com/2018-08-01; added remediation: source.android.com/2018-08-01.
    Before
    no authoritative guidance recorded
    After
    patch: source.android.com/2018-08-01 · remediation: source.android.com/2018-08-01
    source.android.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Android-8.1 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Android-8.1 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    source.android.com ↗
  5. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    NIST NVD ↗
  6. CVSS scoreCVSS score changed from not recorded to 5.0 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H).
    Before
    not recorded
    After
    5.0 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H)
    NIST NVD ↗
  7. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2018-21032↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2018-9438 · cve.blacktree.nl