CVE-2016-2568

highCVSS 7.8covered by 1 sourcefirst seen 2026-08-06

CSIRTS triage

What: pkexec with --user flag allows local users to escape the target session and return to the parent session with elevated privileges.
Who is affected: Systems with Polkit installed where unprivileged users can execute pkexec with --user parameter.
Urgency: High; CVSS 7.8 and local privilege escalation with straightforward exploitation path.
Action: Upgrade Polkit to a version that fixes session boundary enforcement or disable pkexec --user functionality.

AI-assisted analysis generated from the source advisory — verify against the original.

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Low exploitation risk0.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.

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