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.
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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.