CVE-2026-105841CWE-78command-injection

CVE-2026-105841

High · published October 6, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
60.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
7.7 · 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
EPSS
0.00948 · 60.8th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-10-06T18:17Z
References (3)
https://ohse.de/uwe/software/lrzsz.html · [email protected]https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html · [email protected]https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-os-command-injection-via-lrz-pipe-mode · [email protected]
EPSS history
Timeline
  • 08 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 06 OCT 13:35Z
    lrzsz before 0.13.0 OS Command Injection via lrz Pipe Mode
    cvelistv5