CVE-2026-105842

lrzsz: lrzsz before 0.13.0 contains a heap-based buffer overflow vulnerability in procheader() of the lrz receive utility wh...

CVE-2026-105842 is fixed in lrzsz on 1 platform by DEBIAN-CVE-2026-105842 (version 0.12.21rc-5), released October 13, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0021

10th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
lrzsz · Debian 14	0.12.21rc-5	DEBIAN-CVE-2026-105842	Oct 13, 2026

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