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CVE-2016-8440

29
FAUCET Score

CVE-2016-8440 is a critical buffer overflow vulnerability affecting the Android kernel (version 3.18) due to improper input validation in the ADSP SID2CB system call. This flaw could lead to a hypervisor memory overwrite, allowing an unauthenticated attacker to achieve full compromise of the system with high impact on confidentiality, integrity, and availability. Despite its critical CVSS score of 9.8, there is no public exploit code available, nor is it listed on the KEV catalog, and it has received no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
3.18CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:3.18:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.21%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0221 is in the 70th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

googlevendor investigatingvia nvd_reference
View patch

References

source.android.com / security/bulletin/2017-01-01.html
Vendor Advisory
securityfocus.com / bid/95227
Third Party AdvisoryVDB Entry