CVE-2026-105840

lrzsz before 0.13.0 Path Traversal via lrz Restricted Mode checkpath()

Published Oct 6, 2026 CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Uwe Ohse
Uwe Ohse lrzsz
Vendors & Products Uwe Ohse
Uwe Ohse lrzsz
Type Values Removed Values Added
Metrics ssvc

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

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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 9, 2026, 12:59 AM
Reserved
Oct 5, 2026, 10:00 PM
Status
Deferred
Published
Oct 6, 2026, 2:17 PM
Modified
Oct 9, 2026, 2:16 AM
Severity
Important
Public date
Oct 6, 2026, 1:35 PM