Out-of-bounds Read in Rsyncproject Rsync
CVE-2026-43618
Rsync version 3.4.2 and prior contain an integer overflow vulnerability in the compressed-token decoder where a 32-bit signed counter is not checked for overflow, allowing a malicious sender to trigger an overflow that causes the receiver…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (17.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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-2026-43618?
- CVE-2026-43618 is a high-severity vulnerability in Rsyncproject Rsync, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-05-20.
- How severe is CVE-2026-43618?
- High severity. CVSS v3 base score is 8.1 out of 10.