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tmux is an open-source terminal multiplexer maintained by the tmux project and packaged for Ubuntu. It provides persistent terminal sessions, multiple windows, and split panes for running command-line programs. It is commonly deployed by system administrators, developers, and users working on Unix-like servers or remote systems.
Official website · tmux.github.ioSeverity across 1 analyzed records
As of 10/02/2026, within CyStack's analyzed data, tmux has 0 security vulnerabilities published in the last 90 days. Of these, 0 are rated High or Critical. None of these vulnerabilities is listed in the CISA KEV catalog. CyStack recommends that organizations and individual users remediate applicable vulnerabilities as soon as possible.
CyStack does not yet have sufficient official-source data to identify the latest version of tmux and determine which vulnerabilities affect that version.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
Explore CyStack VulnScan| Vulnerability | Exploitation status | Fix | Published | Severity |
|---|---|---|---|---|
CVE-2020-27347tmux stack buffer overflow in function input_csi_dispatch_sgr_colon | Exploitation statusNot confirmed | FixYes | Published11/06/2020 | SeverityHigh |
