{"cve":"CVE-2016-2568","nvd":{"published":"2017-02-13T18:59:00.393","modified":"2026-10-08T22:16:38.407","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","score":7.8},"cwes":["CWE-116"],"references":["http://www.openwall.com/lists/oss-security/2016/02/26/3","https://access.redhat.com/security/cve/cve-2016-2568","https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062","https://bugzilla.redhat.com/show_bug.cgi?id=1300746","https://ubuntu.com/security/CVE-2016-2568"],"products":["freedesktop:polkit","redhat:enterprise_linux"],"source":"nvd","synced_at":"2026-10-19T20:41:54.846948762+00:00"},"epss":{"cve":"CVE-2016-2568","score":0.00366,"percentile":0.30182,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}