CVE-2026-22278

High

Published: 22 January 2026

Published

22 January 2026

Modified

28 January 2026

KEV Added

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Patch

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CVSS Score 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0005 15.4th percentile

Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-22278 is a high-severity Improper Restriction of Excessive Authentication Attempts (CWE-307) vulnerability in Dell Powerscale Onefs. Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Brute Force (T1110); ranked at the 15.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 AC-7 (Unsuccessful Logon Attempts) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Brute Force (T1110). What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

AC-7 Unsuccessful Logon Attempts good match

prevent

AC-7 directly limits unsuccessful logon attempts and enforces account lockouts, preventing brute-force exploitation of the improper restriction vulnerability leading to unauthorized access.

SI-2 Flaw Remediation good match

prevent

SI-2 mandates timely identification and correction of software flaws, such as patching Dell PowerScale OneFS to version 9.13.0.0 or later to remediate this authentication vulnerability.

SI-4 System Monitoring partial match

detect

SI-4 enables continuous monitoring of systems to detect anomalous patterns of excessive authentication attempts indicative of brute-force attacks.

MITRE ATT&CK Enterprise TechniquesAI

T1110 Brute Force Credential Access

Adversaries may use brute force techniques to gain access to accounts when passwords are unknown or when password hashes are obtained.

attack.mitre.org →

Why these techniques?

CWE-307 directly enables brute force attacks (T1110) by failing to restrict excessive authentication attempts on a remotely accessible service.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

Dell PowerScale OneFS versions prior to 9.13.0.0 contains an improper restriction of excessive authentication attempts vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

Deeper analysisAI

CVE-2026-22278 is an improper restriction of excessive authentication attempts vulnerability, classified under CWE-307, affecting Dell PowerScale OneFS versions prior to 9.13.0.0. Published on 2026-01-22, it carries a CVSS v3.1 base score of 8.1 (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to significant impacts on confidentiality, integrity, and availability.

An unauthenticated attacker with remote network access can exploit this vulnerability, though it requires high attack complexity and no user privileges or interaction. Successful exploitation could lead to unauthorized access on the affected system.

Dell's security advisory DSA-2026-049 details mitigation for this and other PowerScale OneFS vulnerabilities, recommending an update to version 9.13.0.0 or later. Additional guidance is available at https://www.dell.com/support/kbdoc/en-us/000415586/dsa-2026-049-security-update-for-dell-powerscale-onefs-multiple-vulnerabilities.