Is CVE-2026-21423 actively exploited?

No active exploitation of CVE-2026-21423 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-21423 be exploited remotely?

No. CVE-2026-21423 requires local access to exploit.

What is the CVSS score of CVE-2026-21423?

CVE-2026-21423 has a CVSS score of 6.7 (MEDIUM).

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MEDIUM

CVE-2026-21423

CWE-276Published: March 4, 2026· Updated: Mar 4, 2026

6.7

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.1th

Official Description

Dell PowerScale OneFS, versions prior to 9.10.1.6 and versions 9.11.0.0 through 9.12.0.1, contains an incorrect default permissions vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to code execution, denial of service, elevation of privileges, and information disclosure.

NVD Source

Technical Analysis

CVE-2026-21423 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high 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 6.7.