CVE-2016-0818

The caching functionality in the TrustManagerImpl class in TrustManagerImpl.java in Conscrypt in...

5.9 MediumFix available

The caching functionality in the TrustManagerImpl class in TrustManagerImpl.java in Conscrypt in Android 4.x before 4.4.4, 5.x before 5.1.1 LMY49H, and 6.x before 2016-03-01 mishandles the distinction between an intermediate CA and a trusted root CA, which allows man-in-the-middle attackers to spoof servers by leveraging access to an intermediate CA to issue a certificate, aka internal bug 26232830.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.27%Down 0.8 points since Feb 4, 2022

What each source reports

NVD Score used 5.9

Record: CVE-2016-0818
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-254, CWE-345
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-0818
Updated: 2026-11-02

EUVDEUVD-2016-0829 No score

Record: EUVD-2016-0829
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gfmm-3f49-2hrh 5.9

The caching functionality in the TrustManagerImpl class in TrustManagerImpl.java in Conscrypt in...

Record: GHSA-gfmm-3f49-2hrh
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-0818 5.9

Record: UBUNTU-CVE-2016-0818
CVSS 3.0: 5.9 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

google android

Affected packages

Affected packages
Package	Affected	Fixed
`android` Ubuntu:16.04:LTS	before 20160307-0742-0ubuntu3, plus listed versions 20150818-1500-0ubuntu220150818-1500-0ubuntu3	20160307-0742-0ubuntu3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-0818 is a medium vulnerability (CVSS 5.9) in Google Android, published March 12, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in android 20160307-0742-0ubuntu3.