CISA KEV · Known exploitedCritical

CVE-2021-1498

Cisco HyperFlex HX

Multiple vulnerabilities in the web-based management interface of Cisco HyperFlex HX could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS
9.8
EPSS
100.0%
100.0% percentile
CISA KEV
Listed
Published
2021.05.06
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability100.0%
Technical severityCVSS 9.8

Vulnerability overview

Multiple vulnerabilities in the web-based management interface of Cisco HyperFlex HX could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Affected product and versions

Product
Cisco HyperFlex HX
Affected versions
< 4.0\(2e\), >= 4.5 < 4.5\(2a\)
Fixed versions
4.0\(2e\), 4.5\(2a\)

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2021.11.17
  1. 1
    Identify

    Confirm that Cisco HyperFlex HX and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-77, CWE-78
KEV added
2021.11.03
Ransomware use
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