CVE-2026-26359Network attack vector

Authenticated arbitrary file overwrite via attacker-controlled path

Published Feb 19, 2026 · Updated Feb 19, 2026

External file-path control in Dell Unisphere for PowerMax before 10.3.0.1 allows remote authenticated users to overwrite arbitrary files. Dell identifies externally controlled file-name or path input but does not disclose the affected endpoint, parameter, or file-write operation. Low-privileged remote access is required; exploitation can replace files accessible to the service, with confidentiality, integrity, and availability consequences reported by Dell.

CVSS severity8.8
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

External file-path control in Dell Unisphere for PowerMax before 10.3.0.1 allows remote authenticated users to overwrite arbitrary files. Dell identifies externally controlled file-name or path input but does not disclose the affected endpoint, parameter, or file-write operation. Low-privileged remote access is required; exploitation can replace files accessible to the service, with confidentiality, integrity, and availability consequences reported by Dell.

The record

CVE
CVE-2026-26359
Published
Feb 19, 2026
Updated
Feb 19, 2026
Vendor
Dell
Product
PowerMax
Classifications
CWE-73, CAPEC-72, CAPEC-79, CAPEC-76, CAPEC-80, CAPEC-267, CAPEC-64, CAPEC-13, CAPEC-78, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=N/A <10.3.0.1 or later

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dell · PowerMaxversion=N/A <10.3.0.1 or later
Dell · Unisphere for PowerMaxversion=N/A <10.3.0.1 or later

Published CVSS scores

8.8DellCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CAPEC-72URL Encoding
CAPEC-79Using Slashes in Alternate Encoding
CAPEC-76Manipulating Web Input to File System Calls
CAPEC-80Using UTF-8 Encoding to Bypass Validation Logic
CAPEC-267Leverage Alternate Encoding
CAPEC-64Using Slashes and URL Encoding Combined to Bypass Validation Logic
CAPEC-13Subverting Environment Variable Values
CAPEC-78Using Escaped Slashes in Alternate Encoding
T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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