CVE-2026-53542highCWE-78

CVE-2026-53542: high-severity vulnerability in Termix-SSH Termix

Termix: Tar option injection in file-manager archive creation allows command execution on managed SSH hosts

Published · Updated

Follow this CVE+ Monitor Termix

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.8epss 0.7%
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to 2.3.2, the archive creation endpoint in src/backend/ssh/file-manager.ts passes selected file basenames to tar without an end-of-options marker and without making the operands unambiguously relative. A user with access to an SSH file-manager session can select basenames beginning with GNU tar options such as --checkpoint=1 and --checkpoint-action=exec, causing tar, tar.gz, tar.bz2, or tar.xz creation to interpret those names as options. The resulting checkpoint action executes commands on the managed SSH host with the privileges of the connected SSH account, allowing file disclosure, modification, and service disruption. This issue is fixed in version 2.3.2.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Termix-SSH · Termix
Related CVEs — Termix-SSH Termix

In the same product, most dangerous first.

CVE-2026-45744CRITICALTermix has an OS Command Injection in File Manager resolvePath endpointEPSS 2.0%CVE-2026-45748CRITICALTermix Vulnerable to Remote Code Execution via SSH Tunnel Forward Command InjectionEPSS 1.7%CVE-2026-42453HIGHTermix: Command injection in extractArchive/compressFiles via double-quote escaping bypassEPSS 1.2%CVE-2026-53545CRITICALTermix: Remote Code Execution via Tunnel Disconnect pkill Command InjectionEPSS 0.7%CVE-2026-42454CRITICALTermix: OS Command Injection in Docker Container Management EndpointsEPSS 0.7%CVE-2026-120322CRITICALTermix-SSH Termix transferToHost path traversalEPSS 0.6%