CVE-2026-8933 Affecting snapd package, versions <2.76+ubuntu22.04.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2204-SNAPD-18068992
- published21 Jul 2026
- disclosed21 Jul 2026
Introduced: 21 Jul 2026
NewCVE-2026-8933 (opens in a new tab)How to fix?
Upgrade Ubuntu:22.04 snapd to version 2.76+ubuntu22.04.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream snapd package and not the snapd package as distributed by Ubuntu.
See How to fix? for Ubuntu:22.04 relevant fixed versions and status.
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.