Description
Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:HAttack ComplexityHigh
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:CScopeChanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Canonical Ltd.
commercial·GBaka canonical
and 7 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
References
https://ubuntu.com/security/CVE-2026-3888
ubuntu.com
https://github.com/fevar54/CVE-2026-3888-POC-all-from-the-Qualys-platform
github.com
https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root
blog.qualys.com
and 5 more references View all →
News mentions
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