---
title: "CVE-2025-10158\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2025-10158?format=md
keywords: index, follow
---

# CVE-2025-10158

Publication date 18 November 2025

Last updated 19 June 2026

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/CVE-2025-10158?format=md#priority-reason )

## Cvss 3 Severity Score

**4.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2025-10158?format=md#impact-score)

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## 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](https://ubuntu.com/security/cves/about#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 | Fixed 3.1.3-8ubuntu0.9+esm1  Ubuntu Pro |
| 18.04 LTS bionic | Fixed 3.1.2-2.1ubuntu1.6+esm3  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 3.1.1-3ubuntu1.3+esm5  Ubuntu Pro |
| 14.04 LTS trusty | Fixed 3.1.0-2ubuntu0.4+esm3  Ubuntu Pro |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2025-10158?format=md#patch-details)

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### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| rsync | * Upstream:   [797e17f](https://github.com/RsyncProject/rsync/commit/797e17fc4a6f15e3b1756538a9f812b63942686f) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

4.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 4.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-10158)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-10158)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-10158)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2025-10158)

### Related Ubuntu Security Notices (USN)

+ [USN-8283-1](https://usn.ubuntu.com/USN-8283-1)
+ rsync vulnerabilities
+ 20 May 2026

+ [USN-8349-1](https://usn.ubuntu.com/USN-8349-1)
+ rsync vulnerabilities
+ 1 June 2026

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2025-10158>
* <https://attackerkb.com/assessments/fbacb2a6-d1cd-4011-bb3a-f06b1c8306b1>