CVE-2025-32463 Sudo Inclusion of Functionality from Untrusted Control Sphere

What is CVE-2025-32463?

CVE-2025-32463 is a critical vulnerability in Canonical Ubuntu Linux, published on 30 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-829

Which versions are affected by CVE-2025-32463?

It affects 8 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Opensuse Leap, Redhat Enterprise Linux, Sudo Project Sudo, Suse Linux Enterprise Desktop and 2 more.

How do I fix CVE-2025-32463?

Upgrade to a fixed version. US federal agencies must fix it by 20 Oct 2025.

Is CVE-2025-32463 being exploited?

Yes. Attackers have exploited CVE-2025-32463 in the wild since at least 29 Sep 2025.

Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 69 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-64458, AZL-64464, BELL-CVE-2025-32463, DEBIAN-CVE-2025-32463, GHSA-695j-c63m-mvxc, UBUNTU-CVE-2025-32463.