CVE-2020-5347Network attack vector

DNS response interruption via SmartConnect processing loop

Published Apr 3, 2020 · Updated Sep 16, 2024

Denial of service in SmartConnect DNS in Dell Technologies PowerScale OneFS 8.2.2 and earlier allows remote attackers to interrupt DNS responses. A triggerable error condition leaves SmartConnect processing in a loop that consumes CPU and prevents the service from answering other DNS requests. No authentication or user interaction is required; the documented consequence is degraded SmartConnect DNS availability rather than a cluster crash.

CVSS severity5.3
Medium
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in SmartConnect DNS in Dell Technologies PowerScale OneFS 8.2.2 and earlier allows remote attackers to interrupt DNS responses. A triggerable error condition leaves SmartConnect processing in a loop that consumes CPU and prevents the service from answering other DNS requests. No authentication or user interaction is required; the documented consequence is degraded SmartConnect DNS availability rather than a cluster crash.

The record

CVE
CVE-2020-5347
Published
Apr 3, 2020
Updated
Sep 16, 2024
Vendor
Dell Technologies
Product
PowerScale OneFS
Classifications
T1498
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <8.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dell Technologies · PowerScale OneFSversion=unspecified <8.2.2

Published CVSS scores

5.3Dell TechnologiesCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

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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

T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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