A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct… (CVE-2026-8933)
A local privilege escalation vulnerability exists in snap-confine, a core component used by Canonical snapd to create secure execution environments for snap applications. The flaw affects snap-confine versions configured with set-capabilities rather than set-uid-root. An unprivileged local attacker can exploit this vulnerability to bypass security restrictions and execute arbitrary code with root privileges.
AI Analysis
Technical Summary
CVE-2026-8933 is a local privilege escalation vulnerability in snap-confine, which is used internally by Canonical snapd to set up secure environments for snap applications. The issue arises from improper initialization of privilege boundaries or security sandboxes when the binary runs with limited ambient capabilities. This allows a local attacker to bypass intended restrictions and escalate privileges to root. The vulnerability specifically affects snap-confine configured with set-capabilities instead of the traditional set-uid-root method.
Potential Impact
Successful exploitation allows a local, unprivileged attacker to gain full root privileges on the affected system, compromising confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct… (CVE-2026-8933)
Description
A local privilege escalation vulnerability exists in snap-confine, a core component used by Canonical snapd to create secure execution environments for snap applications. The flaw affects snap-confine versions configured with set-capabilities rather than set-uid-root. An unprivileged local attacker can exploit this vulnerability to bypass security restrictions and execute arbitrary code with root privileges.
CVSS v3.1
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8933 is a local privilege escalation vulnerability in snap-confine, which is used internally by Canonical snapd to set up secure environments for snap applications. The issue arises from improper initialization of privilege boundaries or security sandboxes when the binary runs with limited ambient capabilities. This allows a local attacker to bypass intended restrictions and escalate privileges to root. The vulnerability specifically affects snap-confine configured with set-capabilities instead of the traditional set-uid-root method.
Potential Impact
Successful exploitation allows a local, unprivileged attacker to gain full root privileges on the affected system, compromising confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-fxqr-j4gx-622c
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-8933"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a5fd14d1010f89cc21c88ae
Added to database: 07/21/2026, 20:06:37 UTC
Last enriched: 07/21/2026, 20:20:32 UTC
Last updated: 07/21/2026, 21:51:54 UTC
Views: 4
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