lrzsz: lrzsz: Arbitrary command execution via crafted file names in pipe mode

A flaw was found in lrzsz. When operating in pipe mode, the lrz receive utility does not properly sanitize file names received during file transfers before passing them to the system shell. A remote attacker can exploit this flaw by sending a specially crafted file name, leading to arbitrary...

Important: Red Hat Security Advisory: lrzsz security, bug fix, and enhancement update

An update for lrzsz is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

Important: lrzsz

Issue Overview: 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...

RLSA-2026:86056 Important: lrzsz security, bug fix, and enhancement update

Lrzsz consisting of lrz and lsz is a cosmetically modified zmodem/ymodem/xmodem package built from the public-domain version of the rzsz package. Lrzsz was created to provide a working GNU copylefted Zmodem solution for Linux systems. Security Fixes: lrzsz: lrzsz: Arbitrary file overwrite via...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: lrzsz (UTSA-2026-142363)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-142363 advisory. lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside...

Important: Red Hat Security Advisory: lrzsz security, bug fix, and enhancement update

An update for lrzsz is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

CLSA-2026-1792503867 lrzsz: Fix of 3 CVEs

CVE-2026-105840: reject absolute path names in restricted mode in lrz received files and lsz sent files, not only in PUBDIR builds - CVE-2026-105841: remove the pipe mode that ran received files through a shell command when lrz was invoked as rzCOMMAND - CVE-2026-105842: allocate the received...

Rocky Linux 9.6 [TuxCare] Security Update: lrzsz Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1792503867)

The Rocky Linux 9.6 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1792503867 advisory. - lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious...

AlmaLinux 9.6 [TuxCare] Security Update: lrzsz Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1792503867)

The AlmaLinux 9.6 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1792503867 advisory. - lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious...

CLSA-2026-1792422501 Fix CVE(s): CVE-2026-105840, CVE-2026-105841, CVE-2026-105842

SECURITY UPDATE: absolute path names accepted in restricted mode - debian/patches/CVE-2026-105840.patch: reject absolute path names in restricted mode in checkpath in src/lrz.c and wcs in src/lsz.c, not only in PUBDIR builds - CVE-2026-105840 SECURITY UPDATE: command injection via the pipe mode -...

SUSE CVE-2026-105840

lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath in src/lrz.c only rejects '../' sequences unless built with...

RLSA-2026:83525 Important: lrzsz security, bug fix, and enhancement update

Lrzsz consisting of lrz and lsz is a cosmetically modified zmodem/ymodem/xmodem package built from the public-domain version of the rzsz package. Lrzsz was created to provide a working GNU copylefted Zmodem solution for Linux systems. Security Fixes: lrzsz: lrzsz: Arbitrary file overwrite via...

lrzsz: lrzsz: Arbitrary command execution via crafted file names in pipe mode

A flaw was found in lrzsz. When operating in pipe mode, the lrz receive utility does not properly sanitize file names received during file transfers before passing them to the system shell. A remote attacker can exploit this flaw by sending a specially crafted file name, leading to arbitrary...

Important: Red Hat Security Advisory: lrzsz security, bug fix, and enhancement update

An update for lrzsz is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

CLSA-2026-1792053113 lrzsz: Fix of 3 CVEs

CVE-2026-105840: lrz: reject absolute and escaping paths in restricted mode - CVE-2026-105841: lrz: remove piping received files to a shell command - CVE-2026-105842: lrz: terminate received data and bound file name length...

AlmaLinux 9.2 [TuxCare] Security Update: lrzsz Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1792053113)

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1792053113 advisory. - lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious...

RHEL 8 : lrzsz (RHSA-2026:83525)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:83525 advisory. Lrzsz consisting of lrz and lsz is a cosmetically modified zmodem/ymodem/xmodem package built from the public-domain version of the rzsz...

Linux Distros Unpatched Vulnerability : CVE-2026-105841

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-105840

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files...

CVE-2026-105841

A flaw was found in lrzsz. When operating in pipe mode, the lrz receive utility does not properly sanitize file names received during file transfers before passing them to the system shell. A remote attacker can exploit this flaw by sending a specially crafted file name, leading to arbitrary...