Is CVE-2021-23894 actively exploited?

No active exploitation of CVE-2021-23894 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-23894 be exploited remotely?

Partially. CVE-2021-23894 requires adjacent network access (same network segment) to exploit.

What is the CVSS score of CVE-2021-23894?

CVE-2021-23894 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2021-23894

CWE-502Published: June 2, 2021· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Deserialization of untrusted data vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows a remote unauthenticated attacker to create a reverse shell with administrator privileges on the DBSec server via carefully constructed Java serialized object sent to the DBSec server.

NVD Source

Technical Analysis

CVE-2021-23894 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

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 8.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.