Critical 9.8Known exploited (CISA KEV)Published May 6, 2021

CVE-2021-1497Cisco HyperFlex HX Command Injection Vulnerabilities

Updated under an hour ago (2026-10-19 06:20 UTC)

Does this affect you?

It affects Cisco HyperFlex HX Data Platform. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by Nov 17, 2021. Treat that date as your deadline.

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Every CVE for Cisco HyperFlex HX Data Platform

Exploited in the last 30 days

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 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Added to CISA KEV Nov 3, 2021; federal remediation due Nov 17, 2021Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 99.93% (percentile 100)
Assigned by: cisco
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Cisco Cisco HyperFlex HX Data Platform cisco:hyperflex_hx_data_platform (from the name)	all versions	CNA record
cisco hyperflex_hx_data_platform cisco:hyperflex_hx_data_platform	before 4.0\(2e\); from 4.5 before 4.5\(2a\)	NVD

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hyperflex-rce-TjjNrkpRvendor-advisory, x-refsource-cisco
http://packetstormsecurity.com/files/162976/Cisco-HyperFlex-HX-Data-Platform-Command-Execution.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1497us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.