CVE Catalog

CVE-2026-8933

HighCVSS 7.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.15%

4th percentile - higher than 4% of all known CVEs

Summary

Vulnerability in snap-confine (snapd component). A local unprivileged attacker can escalate privileges to root by bypassing security restrictions in set-capabilities configuration.

Risk Assessment

Risk of full system compromise by a local user, potentially leading to unauthorized access and control.

Recommendation

Update snapd to a patched version or change snap-confine configuration to standard set-uid-root.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS