Is CVE-2026-33150 actively exploited?

No active exploitation of CVE-2026-33150 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33150 be exploited remotely?

No. CVE-2026-33150 requires local access to exploit.

What is the CVSS score of CVE-2026-33150?

CVE-2026-33150 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2026-33150

CWE-416Published: March 20, 2026· Updated: Mar 23, 2026

7.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.6th

Official Description

libfuse is the reference implementation of the Linux FUSE. From version 3.18.0 to before version 3.18.2, a use-after-free vulnerability in the io_uring subsystem of libfuse allows a local attacker to crash FUSE filesystem processes and potentially execute arbitrary code. When io_uring thread creation fails due to resource exhaustion (e.g., cgroup pids.max), fuse_uring_start() frees the ring pool structure but stores the dangling pointer in the session state, leading to a use-after-free when the session shuts down. The trigger is reliable in containerized environments where cgroup pids.max limits naturally constrain thread creation. This issue has been patched in version 3.18.2.

NVD Source

Technical Analysis

CVE-2026-33150 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.