Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2016-2568

CVE-2016-2568HIGH

n/a n/a — pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes …

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   L   N  C  H  H  H    7.8   .0037   28.9     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Feb 26  Reserved by mitre
  Feb 13  Published (CNA: mitre)
  Oct 8   ENRICHED — CVE-2016-2568. Received CVSS 7.8 and CPE data from NVD.

CWE-116 · CNA: mitre · CVSS v3.1 · 5 references · NVD status: Modified

Description

pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
February 26, 2016	Reserved	Reserved by mitre
February 13, 2017	Published	Published (CNA: mitre)
October 8, 2026	ENRICHED	ENRICHED — CVE-2016-2568. Received CVSS 7.8 and CPE data from NVD.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-116

References (5)

http://www.openwall.com/lists/oss-security/2016/02/26/3 [Mailing List, Third Party Advisory]
https://access.redhat.com/security/cve/cve-2016-2568 [Third Party Advisory]
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062 [Mailing List, Third Party Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=1300746 [Issue Tracking, Third Party Advisory]
https://ubuntu.com/security/CVE-2016-2568 [Third Party Advisory]

Authoritative record: CVE-2016-2568 at cve.org

Weaknesses: CWE-116

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2016-2568 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.