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CVE-2016-0818

16
FAUCET Score

CVE-2016-0818 is a vulnerability in the Conscrypt TrustManagerImpl class in Android versions 4.x, 5.x, and 6.x that allows man-in-the-middle (MITM) attackers to spoof servers. This occurs because the caching functionality incorrectly distinguishes between intermediate and trusted root Certificate Authorities (CAs). With a CVSS score of 5.9 (Medium), this vulnerability has a network attack vector and high impact on integrity, but requires a high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog. Community discussion and media coverage are minimal, with only one mention and one article identified.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:o:google:android:4.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:o:google:android:4.0.1:*:*:*:*:*:*:*
4.0.2CPE matchmatch criteria
cpe:2.3:o:google:android:4.0.2:*:*:*:*:*:*:*
4.0.3CPE matchmatch criteria
cpe:2.3:o:google:android:4.0.3:*:*:*:*:*:*:*
4.0.4CPE matchmatch criteria
cpe:2.3:o:google:android:4.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 2nd percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

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

Remediation

Vendor Patches (1)

googlevendor investigatingvia nvd_reference
View patch

References

android.googlesource.com / platform/external/conscrypt/+/4c9f9c2201116acf790fca25af43995d29980ee0
android.googlesource.com / platform/external/conscrypt/+/c4ab1b959280413fb11bf4fd7f6b4c2ba38bd779
source.android.com / security/bulletin/2016-03-01.html
Vendor Advisory
securityfocus.com / bid/84245