CVE-2026-105841
lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode
- State
- Published
- Severity
- 7.7 High
- Published
- Oct 6, 2026
- Updated
- Oct 6, 2026
- Reserved
- Oct 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
lrzszUwe Ohse |
|
References
- lrzsz 0.13.0 security changesvendor-advisory
- https://ohse.de/uwe/software/lrzsz.htmlproduct
- VulnCheck Advisory: lrzsz before 0.13.0 OS Command Injection via lrz Pipe Modethird-party-advisory
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