CVE-2026-105841

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://ohse.de/uwe/software/lrzsz.html
https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html
https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-os-command-injection-via-lrz-pipe-mode

Configurations

No configuration.

History

06 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 14:17

Updated : 2026-10-06 15:25

NVD link : CVE-2026-105841

Mitre link : CVE-2026-105841

CVE.ORG link : CVE-2026-105841

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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