Vulnerability in Rsyncproject Rsync
CVE-2026-70459
rsync 3.0.0 before 3.5.0 contains a null pointer dereference vulnerability in the daemon child process that allows remote attackers to crash the daemon by sending a file list whose first entry is a dot entry not typed as a directory. The daemon dereferences the first file list entry as a directory structure pointer without verifying the entry type, resulting in an invalid or uninitialized pointer dereference that terminates the client connection.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (52.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Rsyncproject Rsync — versions 3.0.0, 3.5.0
- Samba Rsync
Weakness classification (CWE)
References
- github.com/RsyncProject/rsync/releases/tag/v3.5.0 (release-notes, Product, Release Notes)
- github.com/RsyncProject/rsync/security/advisories/GHSA-p4v4-qxw9-q72m (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/rsync-daemon-crash-via-malformed-file-list-entry (Third Party Advisory, Release Notes, third-party-advisory)
Frequently asked questions
- What is CVE-2026-70459?
- CVE-2026-70459 is a medium-severity vulnerability in Rsyncproject Rsync, classified under Use of Uninitialized Resource. CVSS score: 5.3/10. Published 2026-08-13.
- How severe is CVE-2026-70459?
- Medium severity. CVSS v3 base score is 5.3 out of 10.