CVE-2016-2568High· 7.8▾ Twilightpkexec, 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.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
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.
polkitenterprise_linux = 6.0enterprise_linux = 7.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-4897Medium· 5.5A flaw was found in polkit
CVE-2021-4034High· 7.8A local privilege escalation vulnerability was found on polkit's pkexec utility
CVE-2023-34969Medium· 6.5D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon
CVE-2019-20367Critical· 9.1nlist.c in libbsd before 0.10.0 has an out-of-bounds read during a comparison for a symbol name from the string table (strtab).
CVE-2026-102621Low· 3.3A vulnerability was identified in Freedesktop Poppler up to 26.08.0
CVE-2026-102620Low· 3.3A vulnerability was determined in Freedesktop Poppler 26.06.0/26.07.0/26.08.0