CVE-2025-10158

Publication date 18 November 2025

Last updated 20 May 2026

Ubuntu priority

Cvss 3 Severity Score

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.

Why is this CVE low priority?

Per rsync developers, can't be leveraged into an exploit

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rsync	26.04 LTS resolute	Fixed 3.4.1+ds1-7
	25.10 questing	Fixed 3.4.1+ds1-5ubuntu1.2
	25.04 plucky	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 3.2.7-1ubuntu1.4
	22.04 LTS jammy	Fixed 3.2.7-0ubuntu0.22.04.6
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
rsync	Upstream: 797e17f

Severity score breakdown

Parameter	Value
Base score	4.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-8283-1
rsync vulnerabilities
20 May 2026