lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
History

Fri, 09 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Uwe Ohse
Uwe Ohse lrzsz
Vendors & Products Uwe Ohse
Uwe Ohse lrzsz

Fri, 09 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 06 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
Title lrzsz before 0.13.0 Path Traversal via lrz Restricted Mode checkpath()
First Time appeared Lrzsz Project
Lrzsz Project lrzsz
Weaknesses CWE-22
CPEs cpe:2.3:a:lrzsz_project:lrzsz:*:*:*:*:*:*:*:*
Vendors & Products Lrzsz Project
Lrzsz Project lrzsz
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-06T13:35:46.072Z

Updated: 2026-10-09T00:59:56.280Z

Reserved: 2026-10-05T22:00:10.842Z

Link: CVE-2026-105840

cve-icon Vulnrichment

Updated: 2026-10-09T00:59:52.539Z

cve-icon NVD

Status : Deferred

Published: 2026-10-06T14:17:41.300

Modified: 2026-10-09T02:16:55.510

Link: CVE-2026-105840

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-06T13:35:46Z

Links: CVE-2026-105840 - Bugzilla