CVE-2026-105841

lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode

Published Oct 6, 2026 CVSS 4.0 · 7.7 High EPSS < 1% KEV · Not listed
Description
lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as 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 an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.
Title lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode
First Time appeared Lrzsz Project
Lrzsz Project lrzsz
Weaknesses CWE-78
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 6, 2026, 1:58 PM
Reserved
Oct 5, 2026, 10:00 PM
Status
Deferred
Published
Oct 6, 2026, 2:17 PM
Modified
Oct 6, 2026, 3:25 PM
Severity
Important
Public date
Oct 6, 2026, 1:35 PM