Out-of-bounds Read in Rsyncproject Rsync
CVE-2026-43620
Rsync version 3.4.2 and prior contain a receiver-side out-of-bounds array read vulnerability in recv_files() in receiver.c that allows a malicious rsync server to crash the rsync client process. Attackers can exploit the vulnerability by s…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (4.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Rsyncproject Rsync — versions 0
- Samba Rsync
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
- disclosure@vulncheck.com (release-notes, Release Notes)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-43620?
- CVE-2026-43620 is a medium-severity vulnerability in Rsyncproject Rsync, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-05-20.
- How severe is CVE-2026-43620?
- Medium severity. CVSS v3 base score is 6.5 out of 10.