CVE-2026-105841
lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 |
| Vendor | uwe ohse |
| Product | lrzsz |
| Published | Oct 6, 2026 |
| Last Updated | Oct 6, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Uwe Ohse / lrzsz
0 < 0.13.0
References
Credits
Tristan Madani