CVE-2021-1499: Cisco HyperFlex HX Data Platform File Upload Vulnerability

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 80.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-05-06 · updated 2026-06-17
Weakness: CWE-306

Description

A vulnerability in the web-based management interface of Cisco HyperFlex HX Data Platform could allow an unauthenticated, remote attacker to upload files to an affected device. This vulnerability is due to missing authentication for the upload function. An attacker could exploit this vulnerability by sending a specific HTTP request to an affected device. A successful exploit could allow the attacker to upload files to the affected device with the permissions of the tomcat8 user.

Affected products

Cisco HyperFlex HX-Series: before 4.0\(2e\); from 4.5 before 4.5\(2a\) — fixed in 4.0\(2e\), 4.5\(2a\)

How to fix

Upgrade to a fixed version: Cisco HyperFlex HX-Series 4.0\(2e\), 4.5\(2a\). Check the vendor advisory for mitigations.

References

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