CVE-2026-105842

medium

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.

References

https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-heap-buffer-overflow-via-lrz-procheader-pathname

https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.html

https://ohse.de/uwe/software/lrzsz.html

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93394

Details

Source: Mitre, NVD

Published: 2026-10-06

Updated: 2026-10-06

Risk Information

CVSS v2

Base Score: 6.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 6.4

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

Severity: Medium

CVSS v4

Base Score: 6.1

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00206