CVE-2026-105842

MEDIUMCVSS 6.4

Description

lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility when copying overlong sender-supplied filenames into Pathname. Malicious ZMODEM senders can supply filenames up to 8192 bytes, overflowing the buffer via sprintf() in pipe mode or strcpy() to corrupt heap memory and crash lrz.

Timeline

Published:October 6th, 2026 2:17 PM

Last modified:October 6th, 2026 8:17 PM

CVSS Scoring

CVSS v3: 6.4 (MEDIUM)

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H

Weaknesses (CWE)

CWE-122

References & Reports

Advisories, patches, and third-party reports

https://ohse.de/uwe/software/lrzsz.html
https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html
https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-heap-buffer-overflow-via-lrz-procheader-pathname

Source: NIST NVD · Data may lag official sources by up to one minute