CVE-2026-105841: Uwe Ohse Lrzsz

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Uwe Ohse Lrzsz: before 0.13.0 (fixed in 0.13.0)

Published 2026-10-06. Last modified 2026-10-06.