CVE-2026-8933: CWE-250 Execution with unnecessary privileges
CVE-2026-8933 is a local privilege escalation vulnerability in snap-confine, a core component of Canonical's snapd used to create secure execution environments for snap applications. The flaw affects versions of snap-confine 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 full root privileges. The vulnerability has a high severity rating with a CVSS score of 7.8. No official patch or remediation guidance has been provided yet.
AI Analysis
Technical Summary
This vulnerability arises from improper initialization of privilege boundaries or security sandboxes when snap-confine runs under limited ambient capabilities. It allows a local attacker to escalate privileges to root by exploiting the way snap-confine handles its set-capabilities configuration. The affected versions include exactly 2.75.0 and all versions from 2.75.0 up to but not including 2.76.1. There is no vendor advisory or patch currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation grants a local, unprivileged user full root authority on the affected system. This compromises confidentiality, integrity, and availability by allowing arbitrary code execution with elevated privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local user access to affected systems and monitor for suspicious activity related to snap-confine usage. Avoid using affected versions if possible.
CVE-2026-8933: CWE-250 Execution with unnecessary privileges
Description
CVE-2026-8933 is a local privilege escalation vulnerability in snap-confine, a core component of Canonical's snapd used to create secure execution environments for snap applications. The flaw affects versions of snap-confine 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 full root privileges. The vulnerability has a high severity rating with a CVSS score of 7.8. No official patch or remediation guidance has been provided yet.
CVSS v3.1
Score 7.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper initialization of privilege boundaries or security sandboxes when snap-confine runs under limited ambient capabilities. It allows a local attacker to escalate privileges to root by exploiting the way snap-confine handles its set-capabilities configuration. The affected versions include exactly 2.75.0 and all versions from 2.75.0 up to but not including 2.76.1. There is no vendor advisory or patch currently available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation grants a local, unprivileged user full root authority on the affected system. This compromises confidentiality, integrity, and availability by allowing arbitrary code execution with elevated privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local user access to affected systems and monitor for suspicious activity related to snap-confine usage. Avoid using affected versions if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- canonical
- Date Reserved
- 2026-05-19T10:37:03.649Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5f856e2a4a8d5989472613
Added to database: 07/21/2026, 14:42:54 UTC
Last enriched: 07/21/2026, 14:56:39 UTC
Last updated: 07/21/2026, 15:01:06 UTC
Views: 4
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