---
title: CVE-2025-32463
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-2025-32463
---

# CVE-2025-32463

Publication date 30 June 2025

Last updated 30 September 2025

---

Ubuntu priority

**High**

[Why this priority?](https://ubuntu.com/security/CVE-2025-32463#priority-reason )

## Cvss 3 Severity Score

**9.3 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2025-32463#impact-score)

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## Description

Sudo before 1.9.17p1 allows local users to obtain root access because
/etc/nsswitch.conf from a user-controlled directory is used with the
--chroot option.

### Why is this CVE high priority?

Allows local privilege escalation

[Learn more about Ubuntu priority](https://ubuntu.com/security/cves/about#priority)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| sudo | 25.04 plucky | Fixed 1.9.16p2-1ubuntu1.1 |
| 24.10 oracular | Fixed 1.9.15p5-3ubuntu5.24.10.1 |
| 24.04 LTS noble | Fixed 1.9.15p5-3ubuntu5.24.04.1 |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.3 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.3 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-32463)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2025-32463)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2025-32463)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2025-32463)

### Related Ubuntu Security Notices (USN)

+ [USN-7604-1](https://usn.ubuntu.com/USN-7604-1)
+ Sudo vulnerabilities
+ 30 June 2025

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2025-32463>
* <https://www.sudo.ws/security/advisories/chroot_bug/>
* <https://www.cisa.gov/known-exploited-vulnerabilities-catalog>