A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilities (rather than standard set-uid-root installations). Due to a flaw in how privilege boundaries or security sandboxes are initialized when the binary runs under limited ambient capabilities, a local, unprivileged attacker can exploit this behavior to bypass intended restrictions and execute arbitrary code. Successful exploitation allows the local user to elevate their privileges to full root authority.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Https://Github.Com/Canonical | Snapd | >= 2.75.0, < 2.76.1CNA affecteddefault unaffected | |
| Canonical | Ubuntu 22.04 LTS | Range not provided by sourceCNA affecteddefault affected | |
| Canonical | Ubuntu 24.04 LTS | Range not provided by sourceCNA affecteddefault affected | |
| Canonical | Ubuntu 26.04 LTS | Range not provided by sourceCNA affecteddefault affected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.