CVE-2026-53800: rsync before 3.5.0 (exclusive), 0 through 3.4.4

CVE-2026-53800. CVSS 3.1 base score 4.7 (MEDIUM, Vendor/CNA). EPSS 0.00142 (percentile 0.03162), scored 22-Oct-2026.

Affected technology

rsync · before 3.5.0 (exclusive)
samba

rsync · 0 through 3.4.4
RsyncProject

Description’s affected range: before 3.5.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · Low privileges required · No user interaction required

What an attacker can do

Attackers can atomically substitute a symlink for a source file between transfer completion and the unlink() call, causing rsync to delete the symlink target rather than the intended source file. Vendor/CNA’s CVSS 4.0 assessment (base score 5.7/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 24-Oct-2026 01:44 UTC

CWE: CWE-59, CWE-367
CCR priority: 18.8 /100 (P5)
CVSS 3.1: 4.7 /10 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00142 · percentile 0.03162 · 2026-10-22
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-53800.html