CVE-2020-5319Network attack vector

Storage Processor panic via out-of-order SSH sequence

Published Feb 6, 2020 · Updated Sep 16, 2024

Denial of service in Dell EMC Unity before 5.0.2.0.5.009 allows remote attackers to panic a Storage Processor via NAS Server SFTP. The NAS Server SSH implementation improperly processes an out-of-order SSH protocol sequence, producing an invalid array index and panicking the Storage Processor. No authentication or user interaction is required, but a NAS Server must expose its SFTP service to the attacker's network path.

CVSS severity7.5
High
EPSS probability1.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Dell EMC Unity before 5.0.2.0.5.009 allows remote attackers to panic a Storage Processor via NAS Server SFTP. The NAS Server SSH implementation improperly processes an out-of-order SSH protocol sequence, producing an invalid array index and panicking the Storage Processor. No authentication or user interaction is required, but a NAS Server must expose its SFTP service to the attacker's network path.

The record

CVE
CVE-2020-5319
Published
Feb 6, 2020
Updated
Sep 16, 2024
Vendor
Dell Technologies
Product
Unity
Classifications
CWE-129, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 6, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=unspecified <5.0.2.0.5.009

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dell Technologies · Unityversion=unspecified <5.0.2.0.5.009

Published CVSS scores

7.5DellCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C

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-129Improper Validation of Array Index
T1499Endpoint Denial of Service

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo