CVE catalog
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 absolut
- Severity
- High · CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.31% · Oct 25, 2026
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 --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | lrzsz | sid | 0.13.1-1 | fixed |
| Debian | lrzsz | forky | 0.13.1-1 | fixed |
| Debian | lrzsz | trixie | 0.12.21rc-0.2 | vulnerable |
| Debian | lrzsz | bookworm | 0.12.21-10 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | lrzsz | source | sid | 0.12.21rc-5 | not yet assigned | Not reported | [1150240] |
| Debian | lrzsz | source | forky | 0.12.21rc-5 | not yet assigned | Not reported | [1150240] |
| Debian | lrzsz | source | trixie | (unfixed) | not yet assigned | Not reported | [1150240] |
| Debian | lrzsz | source | bookworm | (unfixed) | not yet assigned | Not reported | [1150240] |
Notes
[trixie] lrzsz: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [lrzsz]Affected
Details (2)
0.12.21-10· arm64 · bookwormAffected
nvd · lrzsz · debian · bookworm; nvd · lrzsz · debian · 12
0.12.21-10+b1· amd64 · bookwormAffected
nvd · lrzsz · debian · bookworm; nvd · lrzsz · debian · 12
[Debian 13 (Trixie)]
- [lrzsz]Affected
Details (2)
0.12.21rc-0.2· amd64 · trixieAffected
nvd · lrzsz · debian · 13
0.12.21rc-0.2· arm64 · trixieAffected
nvd · lrzsz · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2026_83525.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-105840]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-105840]
- [https://security-tracker.debian.org/tracker/CVE-2026-105840]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105840.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3978.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]