PT-2026-61715 · Rsync · Rsync

CVE-2026-44509 · Published 2026-07-20 · Updated 2026-07-20

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.4.3

Description rsync is a file-copying tool utilizing a delta-transfer algorithm to synchronize files. A symlink race condition exists in path-based system calls such as chmod() and chown(), as previous fixes for open() calls did not cover these functions. For rsync daemons configured with use chroot = no, a local attacker can exploit this to modify permissions, ownership, or timestamps of files located outside the exported module.

Recommendations Update to version 3.4.3.

Fix

Time Of Check To Time Of Use

Link Following

Incorrect Authorization

Weakness Enumeration

CWE-367

CWE-59

CWE-863

Related Identifiers

CVE-2026-44509

Affected Products

Rsync

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-44509 · Security Note
• https://github.com/RsyncProject/rsync/security/advisories/GHSA-4h9m-w5ff-j735 · Note
• https://twitter.com/infoflowcloud/status/2079319427246350351 · Twitter Post
• https://twitter.com/CVEnew/status/2079318796435619944 · Twitter Post