Is CVE-2023-46740 actively exploited?

No active exploitation of CVE-2023-46740 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-46740 be exploited remotely?

Yes. CVE-2023-46740 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-46740?

CVE-2023-46740 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-46740

CWE-330Published: January 3, 2024· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

CubeFS is an open-source cloud-native file storage system. Prior to version 3.3.1, CubeFS used an insecure random string generator to generate user-specific, sensitive keys used to authenticate users in a CubeFS deployment. This could allow an attacker to predict and/or guess the generated string and impersonate a user thereby obtaining higher privileges. When CubeFS creates new users, it creates a piece of sensitive information for the user called the “accessKey”. To create the "accesKey", CubeFS uses an insecure string generator which makes it easy to guess and thereby impersonate the created user. An attacker could leverage the predictable random string generator and guess a users access key and impersonate the user to obtain higher privileges. The issue has been fixed in v3.3.1. There is no other mitigation than to upgrade.

NVD Source

Technical Analysis

CVE-2023-46740 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.