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CVE-2021-1497: Cisco HyperFlex HX Installer Virtual Machine Command Injection Vulnerability

criticalknown exploitedpublic exploitCVE-2021-1497
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Cisco HyperFlex HX Installer Virtual Machine contains an insufficient input validation vulnerability which could allow an attacker to execute commands on an affected device as the root user.

CSIRTS triage

vendor: Ciscoproduct: HyperFlex HX InstallerRemote code execution
What
Cisco HyperFlex HX Installer Virtual Machine contains an insufficient input validation vulnerability which could allow an attacker to execute commands as the root user.
Who is affected
Deployments of Cisco HyperFlex HX Installer Virtual Machine.
Urgency
Remediation is urgent as the vulnerability is actively exploited and is rated critical.
Action
Apply the latest security patches from Cisco.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-1497

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-1497coverage & exploitation statusNVD · CVE.org

Recent advisories for Cisco HyperFlex HX

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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