VulnerabilityPublished 8 Oct 2025

CVE-2025-43724: Dell PowerScale OneFS · Insecure Direct Object Reference

Affects Dell PowerScale OneFSSource CVE Database V5

Not known to be exploited · CVSS 4.4 Medium : upgrade to 9.12.0.0 when convenient.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

4.4Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 9.12.0.0

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

Attack Vector: Local
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Dell PowerScale OneFS to 9.12.0.0.

Affected software

Product	Affected	Fixed in
Dell PowerScale OneFS	Affected <9.12.0.0	Fixed in 9.12.0.0

AI-suggested

Restrict local access to Dell PowerScale OneFS systems strictly to trusted, high-privileged users and administrators.
Implement robust monitoring and logging of local access and file share usage to detect anomalous behavior indicative of exploitation attempts.
Enforce the principle of least privilege to minimize the number of users with high-level local access.
Use network segmentation to isolate storage systems and limit exposure of NFSv4 and SMB shares.
Prepare for rapid deployment of patches once Dell releases an update addressing this vulnerability; subscribe to Dell security advisories for timely information.
Conduct regular security audits and penetration tests focusing on local privilege escalation and authorization bypass scenarios.
Consider additional endpoint protection measures on systems with local access to detect and prevent misuse of credentials or keys.
Educate administrators about the risks of this vulnerability and the importance of strict access controls.

Description

Dell PowerScale OneFS, versions prior to 9.12.0.0, contains an authorization bypass through user-controlled key vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability to gain unauthorized access to NFSv4 or SMB shares.

Impact

For European organizations, the impact primarily concerns availability and operational continuity of file sharing services using Dell PowerScale OneFS. Unauthorized access to NFSv4 or SMB shares could disrupt normal operations, cause denial of service, or allow malicious insiders to interfere with file availability. While confidentiality and integrity are not directly affected, the ability to bypass authorization controls undermines trust in access management and could facilitate further attacks or data misuse. Organizations in sectors with high reliance on shared storage—such as finance, manufacturing, and public services—may face operational risks. The requirement for high-privileged local access limits the threat to insider attackers or those who have already compromised a system, but the potential for lateral movement or privilege escalation remains a concern. Given the widespread use of Dell PowerScale in European data centers, the vulnerability could affect critical infrastructure and enterprise environments if not addressed promptly.

CWE-639Authorization Bypass Through User-Controlled Key (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #24OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
Architecture and Design
For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
Architecture and Design · Implementation
Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.
Architecture and Design
Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.
OWASP Cheat Sheets
Access Control (opens in a new tab)
Authorization Testing Automation (opens in a new tab)
Cross-Site Request Forgery Prevention (opens in a new tab)
Insecure Direct Object Reference Prevention (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V4.1.2 (opens in a new tab)
V4.2.1 (opens in a new tab)
V8.3.8 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

dell.com/support/kbdoc/en-us/000376214/dsa-2025-347-security-update-for-dell-powerscale-onefs-multiple-vulnerabilities (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 8 Oct 2025, 15:09 UTC

WeaknessesCWE-639

Technical details

References

Community reviews

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