CVE-2016-2856

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.02% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 63.4% of scored records. A rank, not a probability.

NVD base score

8.4 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2016-03-14 01:00Z10 YR AGO

Last updated

2024-08-05 23:40Z2 YR AGO

Reserved

2016-03-06

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-264

Data version

5.1

Document digest

ee2b723f988b311806c7a1df8f3749467e0c84a086641d1372ce38a2949a0e26

• www.halfdog.nethttp://www.halfdog.net/Security/2015/PtChownArbitraryPtsAccessViaUserNamespace/x_refsource_MISC
• anonscm.debian.orghttp://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=11475c083282c1582c4dd72eecfcb2b7d308c958x_refsource_CONFIRM
• www.openwall.com[oss-security] 20160306 Re: Access to /dev/pts devices via pt_chown and user namespaceshttp://www.openwall.com/lists/oss-security/2016/03/07/2mailing-listx_refsource_MLIST
• www.securityfocus.com84601http://www.securityfocus.com/bid/84601vdb-entryx_refsource_BID
• www.ubuntu.comUSN-2985-2http://www.ubuntu.com/usn/USN-2985-2vendor-advisoryx_refsource_UBUNTU
• people.canonical.comhttp://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-2856.htmlx_refsource_CONFIRM
• anonscm.debian.orghttp://anonscm.debian.org/cgit/pkg-glibc/glibc.git/commit/?h=jessie&id=09f7764882a81e13e7b5d87d715412283a6ce403x_refsource_CONFIRM
• www.openwall.com[oss-security] 20160223 Access to /dev/pts devices via pt_chown and user namespaceshttp://www.openwall.com/lists/oss-security/2016/02/23/3mailing-listx_refsource_MLIST
• www.ubuntu.comUSN-2985-1http://www.ubuntu.com/usn/USN-2985-1vendor-advisoryx_refsource_UBUNTU