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CVE-2021-1497 Cisco CVE debrief

CVE-2021-1497 is a Cisco HyperFlex HX Installer Virtual Machine command injection vulnerability that CISA has added to its Known Exploited Vulnerabilities catalog. Because it appears in KEV, organizations using Cisco HyperFlex HX should treat remediation as urgent and follow Cisco’s update guidance without delay.

Vendor
Cisco
Product
HyperFlex HX
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Security and infrastructure teams responsible for Cisco HyperFlex HX deployments, especially administrators managing HyperFlex installers, virtual machine components, and vulnerability remediation workflows.

Technical summary

The CVE record identifies a command injection issue in Cisco HyperFlex HX Installer Virtual Machine. The CISA KEV catalog flags it as a known exploited vulnerability and directs organizations to apply updates per vendor instructions. No CVSS score was provided in the supplied source corpus.

Defensive priority

High. This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, which indicates it should be prioritized for prompt remediation. The KEV entry’s due date is 2021-11-17.

Recommended defensive actions

  • Apply Cisco updates or remediation steps according to vendor instructions as soon as possible.
  • Inventory Cisco HyperFlex HX deployments to confirm whether the affected installer virtual machine component is present.
  • Prioritize this CVE in patch queues and exception reviews because it is listed in CISA KEV.
  • Validate completion against the CISA KEV due date and document remediation status for affected assets.

Evidence notes

Source evidence is limited to official and authoritative references supplied in the corpus: the CVE record and NVD detail page for CVE-2021-1497, plus CISA’s Known Exploited Vulnerabilities catalog/source feed. The CISA KEV metadata supplied here lists Cisco HyperFlex HX as the product, identifies the issue as a command injection vulnerability, marks it as known exploited, and provides a required action of ‘Apply updates per vendor instructions.’ The supplied timeline places publication and KEV addition on 2021-11-03, with a KEV due date of 2021-11-17.

Official resources

The supplied official timeline shows CVE publication and CISA KEV listing on 2021-11-03, with a KEV remediation due date of 2021-11-17. No additional disclosure chronology was provided in the source corpus.