CVE-2021-36350Network attack vector

Unauthenticated authentication-factor bypass

Published Dec 21, 2021 · Updated Sep 17, 2024

Authentication bypass in Dell Technologies PowerScale OneFS 8.2.2 through 9.3.0.x allows remote attackers to bypass one authentication factor via network requests. The flaw is in the OneFS authentication flow, which accepts a request after only one factor when DUO is configured for groups containing spaces. Remote unauthenticated access is required; successful exploitation can grant access otherwise protected by the skipped factor, with no stated confidentiality or availability impact.

CVSS severity5.9
Medium
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Dell Technologies PowerScale OneFS 8.2.2 through 9.3.0.x allows remote attackers to bypass one authentication factor via network requests. The flaw is in the OneFS authentication flow, which accepts a request after only one factor when DUO is configured for groups containing spaces. Remote unauthenticated access is required; successful exploitation can grant access otherwise protected by the skipped factor, with no stated confidentiality or availability impact.

The record

CVE
CVE-2021-36350
Published
Dec 21, 2021
Updated
Sep 17, 2024
Vendor
Dell Technologies
Product
PowerScale OneFS
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 21, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record 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=8.2.2-9.3.0.x)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dell Technologies · PowerScale OneFSversion=8.2.2-9.3.0.x)

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5.9Dell TechnologiesCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

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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