Is CVE-2021-45421 actively exploited?

No active exploitation of CVE-2021-45421 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-45421 be exploited remotely?

Yes. CVE-2021-45421 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-45421?

CVE-2021-45421 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2021-45421

HIGH

CVE-2021-45421

CWE-200Published: February 14, 2022· Updated: Jul 9, 2026

7.5

CVSS v3.1

Official Description

Emerson Dixell XWEB-500 products are affected by information disclosure via directory listing. A potential attacker can use this misconfiguration to access all the files in the remote directories. Note: the product has not been supported since 2018 and should be removed or replaced.

NVD Source

Technical Analysis

CVE-2021-45421 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), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.