CVE-2025-10158

Rsync: Out of bounds array access via negative index

Published Nov 18, 2025 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
A malicious client acting as the receiver of an rsync file transfer can trigger an out of bounds read of a heap based buffer, via a negative array index. The

malicious

rsync client requires at least read access to the remote rsync module in order to trigger the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8283-1 rsync vulnerabilities
Ubuntu USN Ubuntu USN USN-8349-1 rsync vulnerabilities
History
Type Values Removed Values Added
First Time appeared Rsync
Rsync rsync
Vendors & Products Rsync
Rsync rsync
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A malicious client acting as the receiver of an rsync file transfer can trigger an out of bounds read of a heap based buffer, via a negative array index. The malicious rsync client requires at least read access to the remote rsync module in order to trigger the issue.
Title Rsync: Out of bounds array access via negative index
Weaknesses CWE-129
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
rapid7
Published
Updated
Nov 19, 2025, 4:48 PM
Reserved
Sep 9, 2025, 11:15 AM
Status
Deferred
Published
Nov 18, 2025, 3:16 PM
Modified
Oct 19, 2026, 1:10 PM
Severity
Moderate
Public date
Nov 18, 2025, 2:24 PM