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CVE-2016-2568
pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes…
High7.8EPSS 0.37%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.37% · top 70% of all CVEs (2 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
n/a
- affected n/a
References (5)
- [oss-security] 20160226 Re: CVE Request: pkexec tty hijacking via TIOCSTI ioctl (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://access.redhat.com/security/cve/cve-2016-2568 (opens in a new tab)x_refsource_MISCx_transferred
- https://ubuntu.com/security/CVE-2016-2568 (opens in a new tab)x_refsource_MISCx_transferred
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .