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PatchSiren cyber security CVE debrief

CVE-2021-1498 Cisco CVE debrief

CVE-2021-1498 is a Cisco HyperFlex HX Data Platform command injection vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2021-11-03. Because it is a known exploited issue, organizations running Cisco HyperFlex HX should treat remediation as urgent and follow Cisco’s update guidance.

Vendor
Cisco
Product
HyperFlex HX
CVSS
CRITICAL 9.8
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 teams, infrastructure administrators, and vulnerability managers responsible for Cisco HyperFlex HX Data Platform deployments.

Technical summary

The vulnerability is identified as a command injection issue in Cisco HyperFlex HX Data Platform. The CISA KEV entry indicates it is known to be exploited and directs organizations to apply updates per vendor instructions.

Defensive priority

High

Recommended defensive actions

  • Inventory Cisco HyperFlex HX Data Platform assets and determine whether any deployed versions are affected.
  • Apply Cisco updates per vendor instructions as soon as possible.
  • Prioritize remediation because this CVE is listed in CISA’s Known Exploited Vulnerabilities catalog.
  • Verify patch status after maintenance and document any systems that remain temporarily unpatched.
  • Review monitoring and incident response procedures for signs of unauthorized command execution on exposed systems.

Evidence notes

The supplied source corpus identifies the vulnerability as 'Cisco HyperFlex HX Data Platform Command Injection Vulnerability' and marks it as a CISA Known Exploited Vulnerabilities entry. The KEV metadata lists Cisco as the vendor, HyperFlex HX as the product, dateAdded 2021-11-03, dueDate 2021-11-17, and required action 'Apply updates per vendor instructions.' Official reference links include the CVE record, NVD detail page, and CISA KEV catalog.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-1498 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-1498

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-1498 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-1498

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.