CVE-2026-105840
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 --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html (vendor-advisory)
- ohse.de/uwe/software/lrzsz.html (product)
- www.vulncheck.com/advisories/lrzsz-before-0.13.0-path-traversal-via-lrz-restric… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-105840?
- CVE-2026-105840 is a high-severity vulnerability, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-10-06.
- How severe is CVE-2026-105840?
- High severity. CVSS v3 base score is 7.5 out of 10.