Medium 6.4Published Oct 6, 2026

CVE-2026-105842lrzsz before 0.13.0 Heap Buffer Overflow via lrz procheader() Pathname

Updated under an hour ago (2026-10-19 08:30 UTC)

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It affects Uwe Ohse lrzsz. Add what you run to find out whether that includes you.

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Every CVE for Uwe Ohse lrzsz

Exploited in the last 30 days

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.

CVSS: 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H
Weakness (CWE): CWE-122
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Uwe Ohse lrzsz uwe_ohse:lrzsz (from the name)	before 0.13.0	CNA record

References

https://ohse.de/uwe/software/lrzsz/NEWS-0.13.0.htmlvendor-advisory
https://ohse.de/uwe/software/lrzsz.htmlproduct
https://www.vulncheck.com/advisories/lrzsz-before-0.13.0-heap-buffer-overflow-via-lrz-procheader-pathnamethird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.