CVE-2026-3888

CVE Enrichment

CVSS: 7.8 HIGH
EPSS: 0.46%
EPSS Percentile: 37.82%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security@ubuntu.com
Published: 17-Mar-2026 21:16
Last Modified: 17-Jun-2026 17:44
EPSS Date: 2026-10-12
CWE: CWE-268

CVSS Vector


            CVSS:3.1                            AV:L /
                            AC:H /
                            PR:L /
                            UI:N /
                            S:C /
                            C:H /
                            I:H /
                            A:H

Affected Products / Versions

canonical / ubuntu_linux
Version / affected range: 16.04
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical / ubuntu_linux
Version / affected range: 18.04
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical / ubuntu_linux
Version / affected range: 20.04
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
canonical / ubuntu_linux
Version / affected range: 22.04
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*
canonical / ubuntu_linux
Version / affected range: 24.04
cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:lts:*:*:*

References

Last enrichment sync: 13-Oct-2026 17:03
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE reference: CVE-2026-3888 Metasploit Update Adds Exploit Modules, Windows AArch64 Payloads and Enhancements

CVE (8)

People (10)

Products (8)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.