Dell EMC Isilon OneFS/PowerScale OneFS NFS default permission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Dell EMC Isilon OneFS and PowerScale OneFS and classified as critical. This impacts an unknown function of the component NFS Handler. This manipulation causes default permission. The identification of this vulnerability is CVE-2020-5353. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Dell EMC Isilon OneFS and PowerScale OneFS (the affected version unknown). Affected by this vulnerability is an unknown part of the component NFS Handler. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 07/30/2021 as 542721. The advisory is shared at support.emc.com. This vulnerability is known as CVE-2020-5353. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/13/2026). MITRE ATT&CK project uses the attack technique T1222 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1046). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Dell EMC Isilon
  • Dell PowerScale OneFS

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2020 🔍
07/30/2021 +573 days 🔍
07/30/2021 +0 days 🔍
04/13/2026 +1717 days 🔍

Sourcesinfo

Vendor: dellemc.com

Advisory: 542721
Status: Confirmed

CVE: CVE-2020-5353 (🔍)
GCVE (CVE): GCVE-0-2020-5353
GCVE (VulDB): GCVE-100-179749
CERT Bund: WID-SEC-2026-1046 - Dell EMC Isilon und EMC PowerScale OneFS: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 07/30/2021 08:47
Updated: 04/13/2026 01:14
Changes: 07/30/2021 08:47 (36), 08/05/2021 18:18 (2), 08/05/2021 18:26 (1), 04/13/2026 01:14 (21)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

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