Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.

Attack Vector Local

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
RsyncProject rsync unaffected
Version Status Constraints
0 affected < 3.4.3

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/RsyncProject/rsync/releases/tag/v3.4.3 cve-icon cve-icon
https://github.com/RsyncProject/rsync/security/advisories/GHSA-4h9m-w5ff-j735 cve-icon cve-icon
https://www.vulncheck.com/advisories/rsync-symlink-race-condition-via-path-based-syscalls cve-icon cve-icon
History

Wed, 20 May 2026 01:30:00 +0000

Type Values Removed Values Added
Description Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.
Title Rsync < 3.4.3 Symlink Race Condition via Path-Based Syscalls
Weaknesses CWE-367
CWE-59
References
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-20T00:49:14.709Z

Reserved: 2026-05-01T18:22:45.639Z

Link: CVE-2026-43619

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-20T02:16:36.577

Modified: 2026-05-20T02:16:36.577

Link: CVE-2026-43619

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-20T02:30:05Z

Weaknesses