CVE-2021-1498Known exploitationPublic exploitNetwork attack vector

Unauthenticated command execution via crafted management requests

Published May 6, 2021 · Updated Oct 21, 2025

Command injection in Cisco HyperFlex HX Data Platform allows remote attackers to execute commands as the tomcat8 user via crafted web requests. The web-based management interface insufficiently validates user-supplied input before passing it into command execution. No authentication or user interaction is required, and successful exploitation grants the web service account command execution on the appliance.

CVSS severity7.3
High
EPSS probability100.00%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Cisco HyperFlex HX Data Platform allows remote attackers to execute commands as the tomcat8 user via crafted web requests. The web-based management interface insufficiently validates user-supplied input before passing it into command execution. No authentication or user interaction is required, and successful exploitation grants the web service account command execution on the appliance.

The record

CVE
CVE-2021-1498
Published
May 6, 2021
Updated
Oct 21, 2025
Vendor
ClamAV
Product
Cisco HyperFlex HX Data Platform
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ClamAV · Cisco HyperFlex HX Data Platformversion=n/a

Published CVSS scores

7.3Cisco PSIRTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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