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CVE-2018-9421

17
FAUCET Score

CVE-2018-9421 describes an information leak vulnerability in the Parcel.cpp component of Google Android, specifically within the writeInplace function. This flaw, due to uninitialized data, allows for local information disclosure across processes via Binder, requiring no user interaction or elevated privileges for exploitation. Rated as Medium severity (CVSS 5.5), it poses a high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
6.0CPE matchmatch criteria
cpe:2.3:o:google:android:6.0:*:*:*:*:*:*:*
6.0.1CPE matchmatch criteria
cpe:2.3:o:google:android:6.0.1:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:google:android:7.0:*:*:*:*:*:*:*
7.1.1CPE matchmatch criteria
cpe:2.3:o:google:android:7.1.1:*:*:*:*:*:*:*
7.1.2CPE matchmatch criteria
cpe:2.3:o:google:android:7.1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.08%
Probability of exploitation in next 30 days
EPSS Percentile
0.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0008 is in the 1st percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

googlepatch availablevia nvd_reference
View patch

References

source.android.com / security/bulletin/2018-07-01
PatchVendor Advisory